Midfielder Matt Oakley is also fit again after he was ruled out against Palace last week.
Striker DJ Campbell, an unused substitute in the cup, has joined Championship club Blackpool on loan until the end of the season.
Foxes boss Nigel Pearson could opt to shuffle his pack with defender Chris Powell, who this week signed a new contract to keep him at the club until the end of the season, and midfielder Nicky Adams in the hunt for recalls.
Leyton Orient will be without the suspended Sean Thornton for their game at the Walkers Stadium tomorrow.
The midfielder was due to miss Saturday's FA Cup clash with Sheffield United after being sent off against Colchester but the game was postponed and he will now serve out his one-match ban in the league.
Manager Martin Ling will also be without Simon Dawkins and Jordan Spence who have returned to Tottenham and West Ham following loan spells.
However, midfielder Charlie Daniels will be in contention for a starting berth after arriving from Spurs on a free transfer and Adam Boyd should be fit after struggling with a virus in recent weeks.
Wayne Gray is Ling's only injury absentee, with the striker unlikely to return from a knee injury for a couple of months.