Seems pretty unrealistic that we get Fabinho, so the thread title should probably be changed.
Anyway, even if we get all 4, i won't be happy. Given that i strongly expected to get Griezmann, who'd make us a better club then all those 4 combined, there is not much that can be done in the transfer market to make me happy, or fulllfil my expectations i head before.
In addition i don't see those players strengthening our first 11 compared to last season, bar Fabinho maybe.
Lindelöf is not better then Rojo on his crazy form last season.
Morata is not better then Ibrahimovic last season.
Perisic is not better then (*insert any player*)..nah that's a little exaggerated. I quite rate Perisic to be honest, he is a slightly better technical Lingard, and i also like Lingard. I can see why Mourinho wants to buy him. Talentwise he is nowhere near Martial or Micky. The biggest problem i have with him is that he will be another "Schneiderlin", bought by one manager, and disregarded by the next. Pretty sure that who ever becomes our next manager wouldn't back Perisic one bit. 40-50m is pretty expensive for such a player. He won't elevate us in other regions..in Mourinho's workhorse system he is probably a slight upgrade (to Lingard as a starter).
Fabinho would finally be a worthy Carrick successor, but it would surely take him time to settle in the Prem, if we will even manage to get him, which looks unlikely currently.
The positives are the big potential of Lindelöf and Fabinho, i'd see this window more as a long term one if those players would come.
But i can't see our best(!) starting 11 being better then last season with those.
Which isn't a bad thing, because even with our current players i'd expect us to rival for the title, or at least second place, given that the cohesion should be much better now then last year.
CL is another story..with Griez we would have been serious "2nd rate contenders" after Real, Bayern...with those players not so much.