I have racked my Brain about this, and for the life of me, I really don't see where Debruyne will play on this squad.
Yes, he is a fantastic player, but who do you bench for him? Especially if we get Pogba. It is clear we are going to a 433. Sterling Silva flanking Aguero, Yaya-Pogba ahead of Dihno. Nasri backing up Yaya, Pogba and Silva, as he can operate in all three positions. Navas backing up Sterling. Delph backing up Dihno or joining Dihno in a more defensive front.
The problem I see is Debruyne will have to be a backup if he comes. And that's the exact situation he does not want. It is either him or Pogba, not both.
And personally I think Pogba will be more satisfying to most as a signing, especially because he is more likely to succeed Yaya eventually. However for this season, Debruyne may be the better fit.
As I see it we need 1 of them and a shakeup at LB. Way more than we need both.
Find a better LB and add Pogba. And we are set.