Chelsea manager Enzo Maresca has said Premier League clubs are having to transfer academy players because of the league's profit and sustainability rules (PSR).
Chelsea have signed a host of players from their academy in recent years, with midfielder Conor Gallagher the latest to be linked with a move to Spanish club Atletico Madrid.
Gallagher, who has been at Chelsea since he was eight, has a contract until 2025, after which he could leave the club for free.
Since the transfer of an academy-developed player can be considered pure profit on a club's books, some Premier League sides have looked to homegrown players as a source of revenue to help them limit losses.
“But this is not a Chelsea problem, it is a Chelsea problem.” [Premier League] “There is a problem with the rules,” Maresca said ahead of the pre-season friendly with Real Madrid in North Carolina.
“These are the rules. For all clubs at the moment it is almost mandatory to sell academy players because of the rules. It's not just us, it's all clubs.”
Chelsea host Manchester City in their Premier League opener on August 18.
