If we get Fred and Laporte now I only see us looking for a real backup to Sane and Sterling in summer. I think this is what we had hoped Sanchez to be, as he could have played anywhere up front. My guess is we would be looking at a player like Zaha who can play both wings. I don't see us going for another left back if Mendy is back. Delph have done well, and I think we also have Zincheko becoming a candidate for this position. Further my guess is we do not go for a forward unless Aguero wants to leave.
I think we will try our best to sell Mangala.
Toure's out of contract, and we'll definitely be selling Mangala. I would say there is a possibility of selling any of Bravo, Danilo, and (if he wants to go) Aguero. Other than that it will just be a question of which younger players we'll sell. Gunn if he doesn't want to be the cup keeper/wants to stay at Norwich, Tosin if Pep doesn't think he's good enough (otherwise a loan). Some other interesting players are Manu Garcia, Aleix Garcia, Angelino, and Bersant Celina. Personally I don't think any of them will make it with us but should go on to have decent careers.