Read a match preview and watch a live stream of Chelsea vs Man United.
Where: Stamford Bridge.
When: Sunday 19 January, 16.00 GMT.
Watch live: Click here to watch on NowTV from Sky!
After Arsenal and Manchester City both won in the Premier League on Saturday Chelsea need three points in their clash with Manchester United to keep up the title challenge.
It’s the most highly anticipated fixture of the weekend as these two former English champions go head-to-head.
United have found life tough since Sir Alex Ferguson left as manager and David Moyes took over and currently trail the league leaders by 14 points.
The Red Devils had struggled in 2014 having lost their first three matches of the year in all competitions, but a 2-0 victory over Swansea City last weekend helped relieve some of the pressure.
The last time these two sides met back in August at Old Trafford a tame 0-0 draw was played out, but Jose Mourinho will be looking to turn the screws this time around.
Midfielder Nemanja Matic rejoined the Blues this week in a £20.75m transfer from Benfica and will start this tie from the bench.
Meanwhile Frank Lampard looks to have recovered from a calf injury and should return to the starting XI, but Branislav Ivanovic is set to miss out once again.
For the visitors things have been made even tougher by the absence of both Wayne Rooney and Robin Van Persie due to injury.
Moyes has never beaten Mourinho, but victory from this game would see the Red Devils close the gap on the top four and give the Scot some much needed respite.