The match was originally scheduled for Monday 21st April, the same week as the Champions League quarter-finals. But it's looking likely that at least one of the 2 clubs will still be involved in that competition, so it's been moved to Tuesday 15th April.

However. The FA Cup semi-finals are on Sunday the 13th. And if either Arsenal or Man Utd have made it to those semi-finals, then the league match will instead be on Wednesday 16th April. Either way, it's due to be shown live on Sky Sports.

We can't help wondering why they didn't just make it the Wednesday in the first place. Is it just that that would have been too straightforward? Anyone got any ideas?

Rupe adds...
Many thanks to Stewart and Anthony for providing a very plausible answer to that question.... the Jewish festival of Passover starts on Wednesday 16th, so if possible they'll avoid having the match that evening.