Radamel Falcao has had plenty of criticism for his disastrous loan spell at Manchester United and now his own mother says he has gone backwards and could leave Old Trafford this summer.

Every transfer window, clubs scramble to pick up the best bargains, and fans argue over who their side really need. But who have been the worst signings of the season so far? Sportsmail takes a look.

Radamel Falcao has been offered to Barclays Premier League champions Chelsea as Monaco prepare to send the forward out on loan again next season.

Antonio Valencia has bid farewell to Radamel Falcao in what seems like added confirmation of the Colombia striker’s departure following his season on loan at Manchester United.

Valencia have made early soundings about a deal for Radamel Falcao. The Colombian has returned to Monaco after an inauspicious loan spell at Manchester United but is unlikely to remain there.

Nothing sums up Sevilla’s transfer market brilliance quite like Carlos Bacca. Radamel Falcao may be the household striker in Colombia but Bacca is the future and he proved so in the Europa League final.

Colombia coach Jose Pekerman has named Radamel Falcao as captain of his Copa America team believing he will show his best form despite a disappointing season at Manchester United.

Zenit St Petersburg manager Andre Villas-Boas is ready to battle with his former club Chelsea for the signature of Radamel Falcao, according to reports in Russia.

With the domestic season now over, teams will focus on improving their squads ahead of 2015-16. Here, Sportsmail gives you all the latest transfer stories from Monday, June 8.

Former Manchester United striker Radamel Falcao scored the only goal of the game as Colombia beat Costa Rica in their Copa America warm-up match. He tapped in a cross from Juan Cuadrado.

Will it be third-time lucky, or does bad luck strike in threes? Jose Mourinho is close to signing Colombia striker Radamel Falcao but there is the possibility he will follow in Fernando Torres' footsteps.

Following their historic 1-0 victory against Brazil, Radamel Falcao and his Colombia team-mates reported for duty ahead of their Copa America Group C clash with Peru on Sunday.

Follow Sportsmail's live coverage of the 0-0 draw between Colombia and Peru as both sides managed to book a place in the Copa America quarter-finals.

RIK SHARMA: Colombia reached the Copa America quarter finals despite a painful goalless draw with Peru thanks to Brazil's victory over Venezuela.

Radamel Falcao was deemed not worthy of Manchester United, sent back to Monaco with four Barclays Premier League goals and his £43million invoice untouched.

Jose Pekerman has dropped Chelsea striker Radamel Falcao and Juventus midfielder Juan Cuadrado as he looks to breathe new life into Colombia's team for the 2018 World Cup qualifiers.

The 30-year-old hitman endured a torrid time at Stamford Bridge and will likely be on the move again this summer, but he seemed to put all of that to one side as he relaxed on holiday.

After flopping in the Premier League and missing out on international selection for the Copa America, it's been a bad couple of months for Radamel Falcao.

The tricky subject of third party ownership (TPO) in world football has reared its ugly head once again after Sam Allardyce was filmed discussing workarounds as part of an investigation.

Teen prodigy Kylian Mbappe showed why he has caught Arsene Wenger's eye with a well-taken goal as Monaco overcame determined Montpellier to stay three points clear in Ligue 1.

If Egypt are to succeed at their first World Cup since 1990, it looks crucial that they get Mo Salah fit. The Liverpool forward remains a doubt after a shoulder injury suffered in the Champions League final. 

Rodriguez, the Golden Boot winner in the 2014 edition, fired Colombia to the quarter-finals with six goals in five matches. He faces a battle to be fit for his side's opening game against Japan.

Sportsmail provide you with everything you need to know for the World Cup 2018 clash between Colombia vs Japan including how to watch, kick-off time, squads, stats and latest odds.

Colombia went through courtesy of a Yerry Mina header that saw them pick up three points and top Group H. It was a moment of rare quality in a match lacking in clear-cut chances.

Sportsmail provide you with everything you need to know for the World Cup 2018 clash Senegal vs Colombia including how to watch, kick-off time, squads, stats and latest odds.

Join Sportsmail's ANTHONY HAY with all the live action from the 7pm (BST) kick-off, with our reporters providing all the updates from Moscow.

ROB DRAPER AT THE SPARTAK STADIUM: A game England largely dominated, which ebbed and flowed fascinatingly in extra time, ultimately came down to the one thing England can’t do.

Colombia striker Radamel Falcao has accused American referee Mark Geiger of bias in favour of England as his side crashed out of the World Cup. Colombia were beaten on penalties.

His pedigree on the continent is undoubted and when Beckham's new team joins the MLS in 2020, Falcao could provide the forward line with some much-needed fire power.

The former Manchester United striker was representing Colombia but found his side 2-1 down with minutes remaining and took exception to a spot of time-wasting by the home side.

Rangers assistant boss Gary McAllister hopes missing out on a Copa America slot will finally convince Alfredo Morelos to clean up his act. The striker has bagged 29 goals this season.

Radamel Falcao wants to be part of David Beckham's new MLS franchise Inter Miami.  The Monaco striker is also attracting interest from Columbus Crew in the United States.

The retired actress, 47, sported a new shorter hairstyle as she stepped out for a spot of grocery shopping in Los Angeles, California on Sunday, just a month after welcoming daughter Raddix.

The 31-year-old singer looked incredible in a form-fitting pink dress while snapping photos with the Amazon billionaire at the Hard Rock Stadium.

G-Eazy - who's real name is Gerald Earl Gillum - took things one step further when he shared a shot of Megan's leggy ensemble to his own page with a slew of hearts to follow.

Kobe Bryant and his daughter Gianna tragically died in a helicopter one week ago along seven other passengers. Ciara and husband Russell Wilson honored the NBA legend at the Super Bowl.

J.Lo, 50, stunned viewers with her youthful and ageless glow during the Super Bowl. She received an 'age-defying' facial from skincare expert Toska Husted ahead of the performance

Outraged parents blasted Jennifer Lopez and Shakira's sexy moves during the Super Bowl halftime performance as 'disgusting,' 'vulgar' and too provocative for children.

She didn't just perform at this year's Super Bowl, but appeared in one of the coveted advert slots too.  And new behind the scenes snap from the Michael Bay-helmed ad have been unveiled.

The 24-year-old blatantly wrote that she's 'not f***ing' the Bay Area-born lyricist even after he posted a video of what appeared to be the pair making out following a wild night of shots and dancing.

The Good As Hell hitmaker, 31, took to the social media platform to show off her dancing skills while wearing a tiny black thong swimsuit.

A man tried to light commercial-grade fireworks in an improvised mortar when one of them exploded minutes into celebrating the Kansas City Chiefs Super Bowl win.

The song reached number one on the iTunes Top 100 songs chart this week, a position it was never able to reach even in its heyday.

The 27-year-old pop megastar lived it up during her four night stay at the celeb-favorite Nobu Hotel Miami Beach leading up to the big game.

The Jenny From The Block songstress, 50, was makeup-free and clad in a comfy red sweatsuit as she and fiance Alex Rodriguez strolled around. Her hair was tied into a messy top-knot.

Shakira has taken to YouTube to share a dance tutorial for the Champeta dance choreography she and a large group of backup dancers displayed during Sunday's performance.

She just won her first three Grammys, and then proceeded to take Miami by storm with a performance and several twerking moments on Super Bowl weekend.

McKinney, 26, paired the lingerie-style top with black tailored flares and pointed toe silver heels.

Authorities in Florida have announced charges against 10 members of a sophisticated Miami burglary ring, among them alleged mastermind Xandi Garcia, 30, and his Instagram girlfriend.

Iylah Hanley, from Mount Maunganui, New Zealand, has alopecia, a condition that causes hair loss from the scalp and other areas of the body.