The England international has missed his side's last two matches against Villarreal and Everton in the Champions League and Premier League respectively due to a calf problem.
However, the 28-year-old has seemingly ruled himself out of the contest at the King Power Stadium by confirming that he has not yet been able to return to first-team training.
"Yeah it's getting there. I still haven't trained yet with the squad, but I am getting better, I am progressing as I should be. It is obviously a frustrating injury for me to get, but I am progressing and I will be back on the pitch soon," Maguire told MUTV.
Man United will definitely be missing Raphael Varane against Leicester due to a groin problem, so Victor Lindelof and Eric Bailly could be in line to start as the two central defenders against Brendan Rodgers's side. body check tags ::