The 29-year-old has a muscle strain after missing the last two games with concussion and was forced out of training on Thursday
Ron-Robert Zieler has deputised for the Denmark international in their 3-0 Premier League win over Burnley and Tuesday's 4-2 extra-time EFL Cup defeat to Chelsea
Boss Claudio Ranieri said: "Today he made some (of the) training session but he felt a little pain to a muscle so tomorrow I will check
"I don't know now (exactly what the issue is)
He said to me 'I feel something' and I said 'OK'
"I am not a doctor but the concussion is OK
Let me check (on him) tomorrow
If it is nothing serious then he will come and play, if not he will stay at home."
Marcin Wasilewski is banned after his red card against Chelsea while Nampalys Mendy and Matty James (both ankle) will not be risked
Leicester go to Old Trafford on Saturday 11th in the Premier League but just two points behind United, who they drew with twice last season
May's 1-1 draw at United all but sealed their shock title and Ranieri insisted his reigning champions should not be scared with Jose Mourinho's new-look side suddenly stuttering after successive league defeats, despite Wednesday's 3-1 EFL Cup win at Northampton.
He said: "We are fearless
Why are we scared to go there? More than lose, what can we do there? Why? I enjoy, 70,000 people is amazing, fantastic
I don't want to go when there is just you and me to play
It is very bad show.
"It is not the first time they (Leicester's squad) play against United
Now they are experienced players
It is normal
When you go in this big stadium you want to show your best."
Source : PA
Source: PA