Chelsea are being investigated by governing body FIFA after Italian side Fiorentina launched a complaint about Mohamed Salah's loan switch to Roma.
The 23-year-old joined the Blues in January 2014 but failed to adapt to life in the Premier League. He was loaned out in February and went on to impress in Serie A. The Viola are claiming Salah breached a contract after moving to their league rivals.
Upon joining Fiorentina, the Egyptian winger was expected to remain at the club for the duration of the 2015-16 season. However, he refused to return to the club over the summer, opting for a move to Rome.
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The club has now taken their grievances to FIFA and Salah could find himself slapped with a shock ban for his role in proceedings.
As per the Guardian, via the Press Association, a FIFA spokesperson said: “We can confirm having received a claim from the Italian club, ACF Fiorentina, against the English club, Chelsea FC, and the player, Mohamed Salah Ghaly, for breach of contract.
“The matter is still pending and being investigated.”
Chelsea's loan system as a whole has come in for criticism with the Blues loaning out 33 players this summer.
The West London club have been accused of unfairly stockpiling players, but are not falling foul of any rules.
With football clubs continually looking for ways to maximise their profit, the Blues can do just that by stocking their youth teams with talent, which is often sold on.
Despite being detrimental to some players' development, the loan system used at the Bridge has allowed some young players to showcase their talents.
However, they still struggle to break into the first-team, but how many top-class clubs are producing youth talent on a regular basis?