FC Utrecht have reported Swansea City to FIFA over Michel Vorm's move to Tottenham.
The Dutch club dispute Swansea's claim that Vorm was signed by Spurs on a free transfer and insist they are owed 30 per cent of whatever the Welsh club received, in line with a sell-on clause inserted in the deal when the goalkeeper arrived at the Liberty Stadium from Utrecht in 2011.
Wilco van Schaik, Utrecht's general manager, said in a club statement: "Swansea reported earlier on its own website that they sold Vorm for an undisclosed amount.
"I spoke with chairman Huw Jenkins who had a different story. He told me that they let him go for free. That's unbelievable and unacceptable. He is 30 years old, in the prime of his life. He still had a two-year contract and has a good reputation. Besides that he's a solid member of the Dutch squad.
"Everyone knows that Michel wasn't sold for zero pounds. That money went somewhere. We want to know where.
"We have brought this transfer to the FIFA."
