The two teams are in the Old Trafford tunnel and sporting some bold jackets.
Perfect time then to remind you of the respective team news.
Man United: Onana, Dalot, Maguire, Casemiro, Wan-Bissaka, Mainoo, Eriksen, Antony, Fernandes, Garnacho, Hojlund.
Subs: Bayindir, Amrabat, McTominay, Diallo, Forson, Amass, Ogunneye, Jackson, Wheatley.
Sheffield United: Foderingham, Trusty, Ahmedhodzic, Holgate, Brooks, Osborn, Arblaster, Hamer, Bogle, Archer, Brereton.
Subs: Grbic, Norwood, Vini Souza, Ben Slimane, Larouci, Curtis, Osula, Hampson.