Now that all other areas are more or less replenished, one thing that still worries me about this team is: GOALS!
Lukaku even if he scores 10 goals more than Zlatan did last season, won't be enough overall. Sure Mata, Mkhi, Martial, Rashford, Pogba & Lingard will have to improve their goal tallys significantly as well.
But we still need one more attacker, Greizmann would've been that player had Atleti not gotten the ban but since that option is discarded, my ideal candidate would be Bale but that all hinges on Mbappe leaving for Real & Bale's lack of urgency to leave Real also makes it unlikely. Perisic would underwhelm me especially for the 48m GBP price tag being touted at 29 years old but I can see the value in him providing service for Lukaku, meaning more goals (hopefully).
Lastly, less of a priority, a RB. Valencia is great & had a good season under Jose but to count on him completely for another season where our objectives are much more serious is a bit of a risk. Aurier seems like a target for Jose & isn't a bad option except for his explosive character that could potentially disrupt the dressing room atmosphere. Ideally I think everyone would prefer the club to sign Fabinho for this position given his attacking contribution as well but assume no one has succeeded in signing him means Monaco may have been asking for a massive price tag.