Keep Diego Costa.
Selling Costa and buying Batshuayi and Morata(?) Lukaku (?) Higuain (?) not only weakens the squad but does so with a net loss of 50 million. No brainer for me that the club should do all they can to keep Costa.
All the talk of not wanting an unhappy player at the club, here's the thing - Conte is yet to work with Costa. If, Costa still wants out next summer, then I'd consider selling him but selling a striker in his prime who is performing well after the season we have just had. Plain stupidity