The midfielder ended last season on loan at Leicester City and the Foxes, Coventry and Norwich have already been credited with an interest.
Forest are now thought to have entered the frame as well and Stephen Browne, director of the LTFC2020 consortium bidding to take over the Hatters, told Luton Today: "There are a couple that are trying their hands and we've had enquiries from different clubs.
"There have been several other clubs that have phoned up but none that have put pen to paper."