Jose Mourinho will be travelling to Old Trafford on Monday night, aiming to continue his fine start to the season with the Blues. They are top of the table, having defeated Aston Villa 2-1 in a rescheduled game played last Wednesday.
David Moyes has it all to do. United are, like last season, heavily reliant on Robin van Persie, as the Wayne Rooney saga rumbles on. But Mourinho has a list of brilliant attacking talent he can call upon.
If Chelsea wins the first of the top-four clashes, they will go six points ahead of the champions and one thing the English League should not allow, is a Mourinho team taking a big lead into Christmas.
It should be a great game, played at frantic pace.