If we are playing with two up top does this deal necessarily mean Costa has to leave? I know there's a lot of money in the Michy and possible Morata deals but with those three strikers rotating, and with Michy in particular still young and developing, we could easily use all three of them throughout the season.
I'm wondering if we will fund the other positions we need to strengthen (CM and DF) by letting go of some attacking midfield options and CM's. Mikel looks likely to go, Matic I would keep but I honestly think there's a chance we could cash in on someone like Oscar, a lot has been made in the press of Conte's desire to work with him but if the price is right and it means getting in Koulibaly and a Kante type midfielder, I think it's a sacrifice he'd be willing to make. Particularly if say, Cuadrado is coming back.
I know there's a lot of 'ifs and buts' in this, but having these three doesn't necessarily mean offloading Costa. I don't think it means sacrificing strengthening other areas either.