I think they need a new set of defenders. If they can get Koulibaly and top full backs. The likes of Reece James, Tomori, Christensen, and Emerson can serve as backup.

He also need a top winger that can win them games on his own. Willian, Odoi, Pulisic are more of team players and can rarely deliver individually.

There is enough competition in the middle. Kante Jorginho kovacic mount Barkley loftus cheek are okay for now. Any more signing will only lead to an unhappy squad.