I still don't think he'll play #9 at Madrid as why would he be content with that when he was unhappy about playing in that position in Paris?
Both him and Vini are objectively at their best on the left.
I think it will cause unnecessary issues unless the Brazilian leaves.
They should be after a real #9 and probably a new manager, if they want to be the best team in the world. However that would still probably not be enough to be better than Pep's City, so I get it, and they can afford to be patient. By this time next year, they'll have probably added Mbappé, Yoro, Davies and possibly Alonso takes over from Ancelotti. That will then have them up there, and until then they'll take their chances again next year, as Barcelona and Atletico aren't that great, and they're always capable of beating City in the CL over two legs with that pragmatic approach and the craziest chance conversion rates, like they've been doing for the last 3 years in the competition.
He wasn't unhappy with the position. He was unhappy with being used as a poacher.