We're restricted by squad size rules anyway for both the PL & CL. 17 foreign players, up to 4 association trained and at least 4 club trained.
Association trained players at the moment are Hart, Sterling, Clichy & Delph. Stones and Rose coming in would mean two of those being excluded from one or both squads, with the latter two being the obvious candidates. Otherwise would probably be sold.
I see us bringing in Laporte at the back in at the expense of Mangala but we'd keep Sagna and possibly Zabaleta unless we can get a right back. Kolarov would have to go and Angelino would be back up to Rose.
I'm midfield I'd see at least two of Pogba, Gundogan and possibly one other coming in. If it's just the two then I reckon Toure will be out but we might keep Fernando. If it's three then it would be Fernando or possibly Navas out.
Up front, I think there will be two additions alongside Aguero,with Iheanacho now being classed as club trained.
So we'd have one foreign goalkeeper, 5 foreign defenders, 8 foreign midfielders and 3 foreign forwards.