Both teams were expected to field some of their fringe players, and a resulting loss would not be as bad as say, a Premier League.
This was until Tom Ovrebo's...er I mean...Mark Clattenburg's man-of-the-match performance for United at Stamford Bridge on Sunday.
At 2-2, Sunday's game was perfectly poised to have an end-to-end finish, until Clattenburg decided to give a refereeing performance worthy of a Sunday league pub referee.
The result left Chelsea with a bad taste in their mouth, and now makes tomorrow night's game a chance to exorcise some of Sunday's demons.
This makes predicting what line-up Di Matteo will go with slightly more difficult, with him probably wanting to field a stronger team than he usually would in a league cup tie.