Date, time and coverage: Sunday 5 January, 16:30 GMT kick-off. The match will be shown live in the UK on BT Sport. You can also follow it via ManUtd.com’s rolling blog and MUTV Online’s radio commentary.
Form guide: A six-game unbeaten run came to an end on New Year’s Day when the Reds slipped to a 2-1 defeat to Spurs, but United have progressed every time when drawn against Premier League opposition in the third round in each of the last three years. Swansea are now without a win in seven games across domestic and European competitions following their 3-2 loss to Manchester City on 1 January.
Ins and outs: Wayne Rooney completed the full 90 minutes against Spurs, but David Moyes has admitted he would like to rest the striker, recently troubled by a groin problem, if he could. Robin van Persie has yet to reappear following the thigh injury sustained against Shakhtar Donetsk on 10 December, while Rafael (groin), Phil Jones (knee) and Nani (hamstring) all missed the Reds’ first game of 2014. Swansea winger Pablo Hernandez will miss the trip to Old Trafford after pulling a hamstring early in the defeat to City. Striker Michu and goalkeeper Michael Vorm are recovering from ankle and knee operations respectively, while winger Nathan Dyer is also out of action after suffering ankle ligament damage at Norwich before Christmas.