Sporting Lisbon are demanding that Premier League new boys Wolverhampton Wanderers pay them £48.5 million for a player they've already bought for free.
It's a bit of a d*ck move by Libson, right? But here's the lowdown.
Rui Patricio has already moved to the Midlands side and they had even offered to pay Lisbon a sum of money to keep things amicable but so far that hasn't worked.
According to the Record, Lisbon want their former goalkeeper banned for six months and his new club banned from registering and signing new players for two windows.
In fact, the Record published a whopping 63-page dossier which Lisbon had handed to FIFA, without giving Wolves the chance to settle things.
The 30-year-old goalkeeper decided to call in quits on his own contact after being attacked by Lisbon supporters, after the club failed to qualify for the Champions League.
Wolves confirmed the transfer on their Twitter page on Monday, which read: "Wolves are delighted to confirm @selecaoportugal and @Sporting_CP number one Rui Patricio has joined the club on a four-year deal #BemVindoRui."
He has now signed a four-year-deal with Wolves, but his former club are unhappy with how the whole affair has been handled.
It's been a coup for Wolves. Surely they won't have to pay the compensation fee to Lisbon and the FIFA will tell Lisbon where to go.