Chelsea star Willian has criticised Antonio Conte's decision to force Diego Costa out of the club last year.
The Spain international spent three seasons at Stamford Bridge, winning two Premier League titles before he was ruled surplus to requirements by Conte.
The Italian coach sent the forward a text telling him that he did not need him in the squad, which Costa described as "a moment of madness" before sealing his return to Atletico Madrid last September, even though he was not eligible to play until January this year because of the Spanish side's transfer ban.