Costa has re-joined Atletico Madrid from Chelsea after being advised through Conte he used to be not in his plans.
The Spanish striker will be unable to play for his new membership till January as they’re recently below a switch embargo and the window is closed.
Conte to start with advised Costa he may just depart in the beginning of the summer time nevertheless it has taken till the previous few days for the 2 golf equipment to agree a deal.
Thompson does now not perceive why Conte wrote Costa off so early, particularly earlier than signing a alternative.
“Every manager deserves the right to pick your own team, your own squad,” Thompson stated on Sky Sports of the Chelsea boss.
“We’re now not aware about what is going on within the dressing room, in the back of the scenes.
“For a supervisor to do what Antonio Conte did I believed used to be somewhat fantastic.
“While he’s your participant you must by no means write him off.
“To inform him so early that ‘you’re completed and also you must in finding your self some other membership’ I simply idea used to be very, very bizarre.
“You by no means know what used to be going to occur and occasional and behold I believe they idea they (Romelu) Lukaku completely nailed on.
“That didn’t occur, then they had been suffering.
“In equity they’ve were given a hell of a lead to (Alvaro) Morata.”
Diego Costa will likely be within the stands for Chelsea’s go back and forth to Atletico Madrid within the Champions League this night.