I think Manchester City have no interest in signing Neymar from PSG however they have enough players in their attacking positions and signing Neymar will be surplus to requirements at that position. They already have two suitable players at all positions, the number of Brazilians in the league now is alarming it starting to feel like the Brazilians are taken over the league already.
Agree with what you said, at the moment City still have a lot of wingers like Mahrez, B. Silva and Foden. I don't think this is necessary and indeed they are strong now. Precisely with the presence of Neymar their harmony will be slightly reduced because considering Neymar's game is actually not very suitable for City who always use Direct Pass.