Bangor City say they want compensation from Swansea City for their former captain Owain Tudur-Jones.
The 20-year-old midfielder, who made his first-team debut for Bangor as a 16-year-old, has signed a one-year contract with the League One side.
Bangor have told BBC Wales they hope the FA of Wales will rule that the Swans must pay Bangor under Uefa rules over out-of-contract young players.
Tudur-Jones made his Swansea debut in last month's friendly draw with Fulham.
He was originally given a one-month contract, but Swansea increased that to a year's deal after rivals Tranmere and Swindon showed an interest in the tall midfielder.
"I'm delighted," Tudur-Jones told BBC Wales Sport of his first professional contract.
"I've worked quite hard for the last couple of years and I feel I deserve a shot at full-time football.
"Thankfully Swansea have taken a chance on me and it's up to me to show what I can do.
"I feel I've got the ability to do well at this level.
"It might be a case of training hard and getting used to the pace, but I definitely feel I've got the capabilities to get a good season under my belt this year."