I think both very talented vitinha look better and ahead of his development but i can see Fabio become very good the ability is there but he easily getting bullied off ball he'll likely take full season to get his body ready and settle.Looking like a weird transfer. Watched Vitinha last couple of games for PSG and he looks like the player I thought Vieira would be, Cazorla esque and gets involved in the build up.
Like you said, Vieira is looking like a poor mans Bruno.
I'm sure we bought him so we don't lose out next summer he was already tearing the Portuguese league apart. Just like Saliba transfer