Real Valladolid have accused Manchester City of encouraging one of their players to break his contract to force through a move to the Premier League club.
Defender Juma Bah told the Spanish club on Tuesday that he intends to terminate his contract, allowing City to sign the player for a much lower fee.
City had sent a request to Valladolid earlier in the day asking to begin negotiations over a permanent deal for the 18-year-old, Valladolid said in a statement.
Bah then did not turn up for training on Wednesday, with the Spanish Football Association confirming he had deposited the necessary amount to terminate his contract.