View pictures in App save up to 80% data. 10.Paco Alcacer
From Valencia to Barcelona (2016) for £25.58m
Paco Alcacer arrived at the Camp Nou after scoring over 10 goals in his two previous La Liga campaigns.
But he was Barcelona's fourth-choice attacker behind Lionel Messi, Neymar and Luis Suarez and never established himself, making just 15 league starts.The Spaniard has since gone on to star for Borussia Dortmund and his national team since leaving.
9. Memphis Depay
From PSV to Manchester United (2015) for £31m
Manchester United signed Depay in 2015 after he netted 22 goals for PSV and finished as the Eredivisie top scorer.
But in his first season in the premier league, he managed to score just two goals in 29 premier League appearances.Depay was sold 18 months after arriving at Old Trafford and like Alcacer, has since gone on to impress for his new team Lyon, as well as Holland.
View pictures in App save up to 80% data. 8. Thomas Lemar
From Monaco to Atletico Madrid (2018) for £51m
After two impressive play in ligue 1 with Monaco, Lemar lifted the World Cup with France in 2018 and earned a move to Atletico Madrid.
But the winger managed just three goals in 31 La Liga matches in his debut season and he's currently goalless in 15 games so far in 2019/20. With Antoine Griezmann no longer in Madrid, it was hoped Lemar could fill the hole he left, but that looks unlikely. Lemar is struggling for Atletico Madrid.
View pictures in App save up to 80% data. 7. Neymar Junior
From Barcelona to PSG (2017) £189m
Now, this transfer makes the list for a different reason to all the rest. Neymar has been impressive since joining PsG while scoring 60 goals in 70 appearances.
But it's his injuries and off-field antics that put the Brazilian on this list. He's missed a ridiculous 58 games through injury and has served bans for abusing referees and getting into altercations with fans.
Of course, there's also the constant talk he'll rejoin Barcelona in the near future. A complete waste of money? No. But was Neymar really worth £189m? Probably not.
From Vitoria to Manchester United (2010) at £7.4m
Bebe never established himself after that and was sold to Benfica without making any more appearances for United. What a terrible transfer that was. Bebe became a forgotten man at United.
View pictures in App save up to 80% data. 5. Danny Drinkwater
From leicester City to Chelsea (2017) for £35m
Drinkwater joined N'Golo Kante, his former Leicester midfield partner, 12 months after the Frenchman arrived at Chelsea. He struggled to break into Chelsea's first-team and was sent on loan to Burnley, where he's made just one appearance after suffering a serious injury on a night out. Right now, Drinkwater hasn't broken into Chelsea's first team.
4. Leonardo Bonucci
From Juventus to AC Milan (2017) for £35m
After winning six consecutive Serie A titles at Juventus, Bonucci moved to AC Milan for a new challenge, hoping to restore the club to former glories. But that's not how it worked out. After being named captain and signing a five-year deal, the Italian could only help the Rossoneri to a sixth-placed finish.
He went back to Juve after one season and has since won another title. Bonucci wasn't any help for AC Milan.
3) Angel Di Maria
From Real Madrid to Manchester United (2014) for £59.7m
Di Maria's big-money move to Man United had fans seriously excited six years ago. But after a solid start, he was used sparingly as a substitute by Louis van Gaal come the end of his first season.
After just 12 months at Old Trafford, the club cut their losses and sold Di Maria on to PSG for less than £44m. He's become a solid forward for the French club since. Di Maria had just one season at Old Trafford.
2. Philippe Coutinho
From Liverpool to Barcelona (2018) at £102 million.
Barcelona wanted the Brazilian star to slot in alongside Messi and Suarez in their front line. But evidently that didn't happen as the then Liverpool star struggled to fit in.
In one and a half seasons, he scored 21 goals in 76 appearances and has since been loaned out to Bayern Munich and replaced by Griezmann.
1. Alexis Sanchez
From Arsenal to Manchester United (2018) a Swap deal.
This might perhaps be the worst swap deal and transfer in premier league history. Sanchez collected nearly £500,000 a week in wages at Old Trafford and just scored five goals in 45 appearances.
Now though, he's off the books and on loan at Inter Milan, where he's picked up another injury. Is the Chilean's time at the top done? Most probably.
Sanchez had troubled times at Manchester United. Fans rated him as a waste of budget, space and money. Alexis Sanchez has been ranked as the worst signing of the last decade. There isno doubt that he ought to be enlisted as the world worst signings of all time.