Cameron was part of Dave Jones' team that won promotion to the Premiership a few seasons ago.
With Jones likely to say goodbye to Willie Boland, Phil Mulryne and possibly Jeff Whitley as well he is going to be looking for midfielders.
It's thought that Cameron's agent is lining up meetings with all three clubs to look for the best package for his player. At 33 length of contract is going to be a factor.