The Rojiblancos technical department prefer not to loan the player, who will be able to train under Diego Simeone's guidance until he can be registered.
Atlético Madrid are close to re-signing Diego Costa, on the express wishes of Diego Simeone, for the 2017-18 season; although the Chelsea centre-forward won't be able to play until January. In the back rooms at Atlético, officials are keeping tight-lipped on transfer affairs (Sevilla's Vitolo is another player who El Cholo has requested); but directors are working hard to satisfy the coach's needs. Atlético now have to reach middle ground with Chelsea, as in Diego Costa's mind, he's already half the way back to being a rojiblanco again.
Atlético, who cannot register new players until 2 January 2018 because of the imposed transfer ban, won't send Diego Costa on loan to another club; one option was to loan the player for six months to a club in China or Brazil but that plan has been discarded. Atlético feel the best solution would be for Costa to train with the first team squad for four months until he is eligible to play. By January 2018, with the transfer ban lifted, Costa will be physically in peak condition and hunger to return to competition. Atleti's technical staff feel that a player like Diego Costa is the perfect compliment for the likes of Griezmann, Torres and Gameiro.