Skysports.com understands Stockport are facing a fight to keep hold of Johnny Mullins this summer.
Highly-rated defender Mullins has been one of Stockport's shining lights in their disappointing relegation campaign.
Mullins began his career at Reading before joining Mansfield in 2006, where he earned a moved to Edgeley Park two years later.
The 24-year-old has impressed during his time with County and clubs higher up the league are keeping tabs on his progress.
Swindon and Peterborough are both believed to have had bids rejected in January and they could now rekindle their interest in the full-back.
Stockport are expected to lose a number of their players following their drop into League Two and Mullins could be the first to leave with a host of clubs chasing his signature.