The damage to Hudson's knee will be revealed fully on Thursday, while the boss continues his player search.
He told today's Rotherham Star: "We have spoken with clubs and they have given us permission to go ahead and speak with their particular player, so we may have someone in."
MillersMAD will keep you updated on any developments first. Meanwhile a Millers youth side kicks off at Dinnington Town at 7.30pm this evening.