Swansea aim to seize on Manchester United's defensive problems to cause a Carabao Cup upset.
United suffered a shock 2-1 defeat at Huddersfield on Saturday -- their first in the Premier League this season -- when the Terriers exposed a hastily-assembled centre-back partnership.
Phil Jones had limped off with the game at 0-0 and his replacement Victor Lindelof was directly responsible for what proved to be the winning goal.
Jones will not feature at the Liberty Stadium on Tuesday, and Eric Bailly's continued absence means that United manager Jose Mourinho has to decide whether to give Lindelof another chance or promote promising teenager Axel Tuanzebe.