United's U21s slipped to a disappointing 4-0 defeat against Crewe Alexandra at Reaseheath on Monday afternoon.
Boss Nigel Clough and his coaching staff oversaw of the game, but the Blades conceded two goals in each half against a more experienced Crewe side.
Billy Waters netted a brace for the hosts with scholars James Jones and George Cooper also getting on the scoresheet.
Blades: Willis, Paling, Hodder, Whitehouse, Banton, Cheeseman, Johns (Coustrain 59), Khan, Eyre (Whiteman 59), Smith (Partodikromo 72), Hamilton.
Unused: Evans, Eastwood.