Chelsea can let Ian Maatsen leave on a temporary basis during the January transfer window, despite having already reached the limit of seven senior loans.
The Dutch youth international, who helped Burnley win promotion last season, is exempt from the rule because he is classed as a homegrown Under-21 player. Maatsen joined Chelsea from PSV Eindhoven at the age of 16 and celebrated his 21st birthday back in March. As result, he satisfies FIFA's criteria for being a 'club-trained' player.
