Craig Ireland is the only fit centre half only the books at the moment, and at the moment things get from bad to worse for the Notts boss:
"It is a massive problem because we could end up without three of our back four against Mansfield," Dearden told Radio Nottingham
"It is a blow to see any player get injured, but the last thing we needed was for another defender to pick up a problem.
"We will have to see how it is today, but the early indications are that it could be a thigh strain.
"If that is the case, then, in normal circumstances, you are talking about two to three weeks." he added.
Dearden has virtually ruled out the option of getting someone in on loan, but he may have to look at that option ahead of the local derby with The Stags.
The only other option Dearden can look at is playing Danny Stone at centre half against The Stags, and bringing Richard Holmes in at right back.