The Foxes edged out a 2-0 win over Tottenham last time out and boss Brendan Rodgers is set to stick with the majority of his team against United.
Star man Jamie Vardy did go off in the final minutes against Spurs, but he should be OK to play with the returning Christian Fuchs in line to replace Timothy Castagne in defence.
For United, Ole Gunnar Solskjaer is unlikely to make too many changes to his own winning team after they thrashed Leeds 6-2.
Scott McTominay was the goal scoring hero against Marcelo Bielsa’s side, but a groin injury will keep him out of this one, with Donny van de Beek set to fill in and Alex Telles replacing Luke Shaw at left back.
And it’s an early start on Boxing Day at the King Power Stadium with a 12.30pm kick off.