I've always seen Pogba as a potential Yaya. He's got incredible ability but his size makes him difficult to deal with. He's not going to be quick over 5yds but let him get going and you're going to struggle to keep up and certainly won't be able to push him off the ball. He's also able to keep the ball away from you with long arms and legs.
He's also got that ability to change a match. He did it to us when we could have won the league against them, just as Yaya did many times and as KdB does now, where they almost get fed up with everyone else not being good enough and suddenly make it look like they're playing against children as they stride across the pitch. Unfortunately, like Yaya, there will be times he'll be a passenger and I'm surprised that's something Pep would accept, but if he's keen, then that's more than good enough for me.
I do wonder about where he'd fit in and the impact, but assuming a midfield 3, currently first choice would be Rodri with KdB and Bernardo. Whilst I can't imagine wanting to bench one of those last two for him, a successful team will play about 60 games a season. Add Pogba in and each starts about 40 games a season. Maybe that would mean KdB could manage more than 70 minutes. Still think a proper back to Rodri is more critical, but I can see how it could work, especially if Gundogan is looking to move on to somewhere he could manage his injuries more easily.