The homegrown midfielder contracted tonsillitis last week and missed both the 1-1 FA Cup third round draw at Wycombe Wanderers and Tuesday night’s 1-0 home win over Crystal Palace while taking a course of antibiotics.
However, he has now resumed full training ahead of the Foxes clash along with Carlos Sanchez, who is also in contention to feature for the first time since injuring his hamstring in last month’s 1-1 draw with West Ham United.
Gabby Agbonlahor is also back on the Bodymoor training fields after a recent back injury, but having fallen out favour under Garde, it remains to be seen whether the long-serving striker will be involved on the weekend.
Speaking at his press conference, Garde said: "Carlos is back in training. Jack is back in training and Gabby is back in training.
"I think that will make them available. I will check today.”
Alan Hutton, however, will not be available for selection against Leicester as he remains sidelined with a hamstring problem picked up in the 3-1 defeat at Sunderland earlier this month.
Skipper Micah Richards initially deputised at right-back against Wycombe, but after being forced off with an ankle knock during the close stages of the match, he was not deemed fit enough to start the subsequent Palace clash.
Leandro Bacuna manned the position in mid-week as a result, and having put in a strong defensive performance to help end the club’s 19-game winless run in the Premier League, he could be in line to retain his place.
The utility man had previously started on the right wing in Saturday’s cup game and may also see some more minutes in his natural role over the coming weeks with Adama Traore out for around 10 weeks with a broken metatarsal bone and Scott Sinclair struggling for form.