Eight players who went from being flops to world beaters: Gnabry, Salah, Forlan…
If it isn’t frustrating enough to see an exciting signing come in and underperform, it’s even worse when they leave and fulfil their potential elsewhere.
It's quite common to see a player flop when joining a new club full of expectation and responsibility, but not all of them can come back from such lows.
Serge Gnabry
However, Baggies manager Tony Pulis only trusted Gnabry with one start during his time in the Midlands, and Gnabry was once even subbed off during an under-21 game.
Serge Gnabry never gave up 💪
— ESPN FC (@ESPNFC) August 23, 2020
August 2015: Joined West Brom on loan from Arsenal
January 2016: Returned to Arsenal after playing one Premier League game
August 2016: Arsenal sold him to Werder Bremen for £4.5m
August 2020: Wins the Champions League with Bayern Munich pic.twitter.com/NHjBQfKyHa
Only 26 years old, Gnabry still has time to improve, and his career has never looked so promising. Not bad for a player deemed not good enough for West Brom.
Mohamed Salah
However, after scoring just twice for the Blues in 13 appearances, it seemed Chelsea's gamble had failed, and Salah was subsequently loaned out to Fiorentina and then Roma.
It's fair to say that Liverpool's investment has since been repaid several times over by Salah. Now coined Liverpool's 'Egyptian King', he has gone on to score 115 goals in 174 appearances, all while firing the Reds to Premier League and Champions League glory.
It's always a bit unfair to suggest Chelsea should have kept hold of him, but they'll surely have a tinge of regret as they watch him fulfil his potential for their Premier League rivals.
Matteo Guendouzi
The 22-year-old French midfielder has set Ligue 1 alight since joining Marseille on loan from Arsenal for the 2021/22 season.
He reportedly fell out of favour due to concerns over his attitude, but even when given a string of games for Arsenal, Guendouzi looked nothing like the player that is now the heartbeat of an impressive Marseille side.
But even if Arteta wanted to swallow his pride and welcome Guendouzi back to the Emirates, he's been denied the chance to do so by Marseille. They have confirmed they'll sign him permanently in the close season after triggering a clause in the loan agreement.
At just 22, Guendouzi could yet live up to the high expectations Sampaoli has placed on him, and become the latest Arsenal player to thrive after leaving the club.
Diego Forlan
But to their amazement - and frankly everyone else's too - Forlan set La Liga alight, scoring 54 goals in 106 appearances.
He even started performing for his national side too, top-scoring in the 2010 World Cup with five goals for his native Uruguay.
Memphis Depay
When Manchester United beat PSG to the signing of Memphis Depay for £25million back in 2015, big things were expected of the talented Dutchman.
Reunited with former Netherlands boss Louis van Gaal, Memphis being handed the esteemed No. 7 jersey tells you all you need to know about the expectation placed on his shoulders.
Wayne Rooney has since told a comedic anecdote about Depay's time in the United Under-23s.
"So, Louis van Gaal made him play for the reserves the next day. I said, 'look, it's a bit difficult [for you]. Just don't come in with all your fancy stuff'.
@WayneRooney Mem... can you borrow me your red leather jacket for tonight please? 👹 #ithoughtwewerepastthat pic.twitter.com/FXtr96wYeQ
— Memphis Depay (@Memphis) September 16, 2018
With his career at a standstill at United, the club cut their losses and sold him to Lyon for £17million in 2017. Memphis enjoyed his football far more in France, scoring 63 goals in 139 appearances, earning a move to Barcelona in 2021.
To frustrate United fans even more, Memphis has made a strong start to life in Spain, scoring 10 goals in 21 appearances.
Shkodran Mustafi
Andy Robertson
Robertson had spent three years with the Tigers since joining them from Dundee United in 2014, but in that time he had been relegated twice and was often the culprit when the East Yorkshire side conceded.
Therefore, despite Jurgen Klopp looking to rebuild the Reds, it was seen as something of a left-field move for Liverpool to sign him in 2017.
However, since arriving at Anfield, Robertson has transformed into one of the world's best full-backs, breaking records for assists alongside team-mate Trent Alexander-Arnold and winning both the Premier League and Champions League in his five years at the club.
Gennaro Gattuso
However, his career wasn't always as glistening as it was during his time at AC Milan. In fact, Gattuso endured a dreadful stint at Rangers in the 1997/98 season before his big break came in Italy.