Cardiff, Crewe and Swansea are all reported to be tracking Tranmere stopper Ian Sharps.
The Warrington-born central defender is out of contract at Prenton Park in the summer and has yet to agree new terms.
Sharps has been an ever-present over the past four seasons - amassing over 150 first-team starts.
The 25-year-old's progress has not gone unnoticed and a number of scouts are understood to be taking a keen interest.
Rovers are keen to keep Sharps on the Wirral, but it remains to be seen whether the central defender can be lured away.