Azpilicueta, Rudiger, Kepa, Jorginho, Kante and Pulisic pretty much guaranteed starters against United in my opinion.
Interested to see who Frank chooses for the "vacant" positions. Does he go for Christensen instead of Luiz, Emerson instead of Alonso or some surprise option like Castillo, does he prefer Pedro over Willian, who starts up front and does Mount get ahead of Barkley in the middle of the park in RLCs absence.