Leeds United boss Marcelo Bielsa is furious with Cody Drameh after his loan move to Cardiff City.
Drameh, 20, has made three Premier League appearances this season but requested to join the Championship club to play more games.
Bielsa begrudgingly granted the right-back’s wish despite his side’s injury crisis as he did not want to keep a player against his will.
However, the Leeds boss said: “I did not think he needed to play games elsewhere. He was a player who was very necessary with all of the absences we have.
“In a situation when opportunities for youngsters have increased, Drameh would prefer to experiment outside our team.
“Clearly, I calculated things wrongly because what I consider as a great opportunity, those who are benefiting from that position, they prefer to abandon the club looking for another type of competition.
“Evidently, what I imagined as a great chance, they don’t.
“Perhaps I overvalue that you’re in a 20-man squad in the best league in the world.
“Of course with a player leaving it’s one alternative less. But when a player wants to leave, there’s no point trying to keep them”