Foden imo, provided things don't go Pogba with him, will likely be able to play anywhere he fancies, or is asked to. Including deep midfield if required. He will be better than almost all of the other players, anywhere or maybe better than all of them.
And I won't lose any sleep if Aouar doesn't sign, as I will assume something else is incoming.
But, he's got more 'gumption' about him than Gundogan imo, is more instantly creative, quicker & has just directly proved himself to be as competitive & as sharp or sharper, than anyone in our midfield. so we are instantly better.
I really wanted Gundogan at City but for me he had something extra about him at Dortmund, some of which he left there when he got injured. He has, imo, been the midfield version of when we signed Robbie Fowler. You can see the memories & moments, & sometimes it looks like he's back, but the full package isn't there, he just hasn't got that 'something' which made him special, anymore, & he just slips back to being a cog in the machine, reliant on all the other bits, to function, in order for him to function. He doesn't change anything, he just does his bit, amongst it. And like with Fowler, he still gets picked, using his smartness to get a game, even though we are crying out for something better, stronger, faster, more ccreative, to raise our level. So we don't get better at all in his area. Instead, he plays & we try to cover it up with different lineups .
This guy is immediately more athletic but also much more of a threat imo. If we have a proper defence, I'm sure he could play in front of it & if we don't get our shit together, I'm sure he'll get caught out, like Rodri, Gundogan & even Fern do because he's only human. But I don't doubt he could play there.
But if we actually had a back 4 worthy of our status & found a genuine Fern MKII, younger & faster & fitter, to play DM then I'd also be much happier seeing Aouar playing at 8, than Gundogan & he would give us so many options & improve the general sharpness of our midfield, along with Foden.
We need to be sharper, all round imo. That's the evolution of football & has been coming for a while. Each non plodder, adds to the team whole.