#5 Costa needs to play uninterrupted football for World Cup inclusion
Settling for Atleti now would probably mean he would have to join someone else temporarily for the next five or six months, which would mean a lot of moving around, settling, getting unsettled again as well as adjusting to different cultures and lifestyles...it would be pretty hectic.
Plus, even if his transfer back to Madrid was greenlit, he might not be guaranteed regular minutes by January, either.
According to Eurosport, Alexandre Lacazette could still snub some of his suitors to join Atletico this summer (despite the ban) which would mean that Costa, should he join, would have to compete with him, Fernando Torres, Antoine Griezmann and Angel Correa for regular minutes.
If things didn’t click from the get-go, Costa could slip down the pecking roder and that would be disastrous for a striker who will be fighting for every minute of playing time he can get as he looks to nail down a place on the Spanish squad plane heading to Russia for the World Cup next summer.