Pereira improved some what in the second half, but I just think he's already hit his ceiling. He hasn't played a great deal to be fair to him, but I just see so many parallels with someone like Cleverley who never really progressed. There was a joke tweet on twitter by one of the betting websites saying "Sunderland fans getting a look at their future midfield of Fred, Pereira and McTominay today" and it probably isn't that far off based on their performances today/Fred+McTominay over time.
Agreed on Sanchez, once a good player but it isn't working and probably never will - offload him and spend the wages elsewhere. He's frustratingly greedy more often than not as well, could have played Young in down the wing a few times today and instead chopped inside and ended up passing it back to Jones or McTominay.