Regarding Grealish, some will think he improves our starting 11 and that's fine. Personally, I don't think he's a better option than what we currently have, he doesn't bring qualities that the squad lacks or plays in a position we are light or weak in he's just another body in an area we are well stacked in in my eyes.That's not knocking Grealish by the way, more a compliment to the talent we already have in the squad and that's why I don't see the Grealish signing as improving our squad.
Last season, everybody commented on our need for a striker, many said we need a new DM, some would say left back, others would say we lacked pace upfront, all credible comments but nobody was wishing we had another wide left player in the squad. Id liken it to if we had gone and bought another right back this summer, could be an excellent player but just not neccesary.
Varane and Sancho are huge improvements when you see they're replacing lindeloff and James(?) genuinely no idea who they even played on the right, everything went down their left. can ask legitimate questions about them but I don't think there's any doubt they strengthen united unfortunately.
I think you're grossly undervaluing lukaku, Chelsea signing him is huge. I've said before he improves Chelsea more than Kane would improve us. Chelsea's biggest weakness was upfront, they've just signed a perfect fit who is at the very top of his game, he will be an animal for them.