Chelsea boss Enzo Maresca has called on the Premier League to change their financial rules so clubs do not feel "compelled" to sell academy players.
When clubs sell academy graduates the entire transfer fee goes down as 'pure profit' in their accounts and can help them navigate the top flight's strict profit and sustainability rules.
Chelsea midfielder Conor Gallagher, 24, who has been at the club since he was eight, has agreed to join Atletico Madrid in a £33m deal.
Mason Mount (£55m), Lewis Hall (£28m), Ruben Loftus-Cheek (£15m), Ian Maatsen (£35m), Callum Hudson-Odoi (£5m) and Billy Gilmour (£7.