An Eden Hazard penalty was, what separated the two sides in Wembley a year ago, and the teams will return again at Stamford Bridge to play for a place in the quarterfinals.
Only seven Premier League teams went to the pot for Monday's draw, with reigning league champions Manchester City handing in an away team at either Middlesbrough or Newport.
The tapes are played on the weekend of February 15 to 18-18.
FA Cup Fifth Round Draw in Full
- Bristol City vs. Shrewsbury / Wolves
- AFC Wimbledon v Millwall
- Doncaster Rovers v Crystal Palace
- Middlesbrough / Newport v Manchester City
- Chelsea v Manchester United
- Swansea City v Barnet / Brentford
- Portsmouth / QPR vs. Watford
- Brighton / West Brom v Derby County