Premier League teams who are competing in Europe this season have entered the competition after the second-round was completed on Wednesday.
Other notable games include Chelsea vs Aston Villa at Stamford Bridge, Liverpool returning to Carrow Road after beating Norwich a fortnight ago, and Tottenham manager Nuno heading back to Molineux after defeating former side Wolves last weekend.
The third-round games will be on the week of 20 September.
CARABAO CUP THIRD-ROUND DRAW IN FULL:
QPR v Everton
Preston v Cheltenham
Manchester United v West Ham
Fulham v Leeds
Brentford v Oldham
Watford v Stoke
Wigan v Sunderland
Norwich v Liverpool
Sheffield United v Southampton
Brighton v Swansea
Wolves v Tottenham Hotspur
Millwall v Leicester
Manchester City v Wycombe