On Saturday, December 19, kick off 15:00, United face Fulham at Craven Cottage in the Premier League.
If you were to buy your train tickets on the day, it would cost you £66.40 for an off-peak return from Manchester Piccadilly to Euston (and then extra for a Tube ticket to the ground).
But if you book now via the National Rail website, it will cost you £56.
On the way there, any train that leaves before 10:35 will cost £28 one way.
On the way back, the services that leave Euston at 18:00 and 18:20 also cost £28 one way. Book now.