Doncaster Rovers could face a battle to hold onto Dean Furman, Kyle Bennett and Reece Wabara.
The soon-to-be out of contract trio are all understood to be considering their options.
Rovers submitted their retained list to the Football League yesterday and Furman and Bennett are both players that boss Paul Dickov hopes to keep at the club.
Whether Dickov wants Wabara to be his first choice right back next season is less clear and the former Manchester City man is thought to be considering a move elsewhere.
Reports in the African press this week also suggest that Bafana Bafana skipper Furman is ready to reject a new deal at the Keepmoat in favour of a move higher up the footballing pyramid.
The Star understands Rovers are more confident about tying down Bennett but they could face competition for his signature, with former Chesterfield boss Paul Cook thought to be weighing up a move for the 24-year-old after taking over the reins at League Two Portsmouth.
Furman’s exploits at international level, including captaining his country at this year’s Africa Cup of Nations, are bound to have alerted several clubs and the 26-year-old is unlikely to be short of options this summer.
The energetic midfielder has remained loyal to South Africa throughout his time at Rovers and, following the club’s failure to win promotion to the Championship, is likely to think long and hard about what is the best move for him in terms of maintaining and enhancing his reputation on the international stage.
Bennett on the other hand has expressed his desire to stay at Doncaster following an impressive comeback season, after it seemed last year that his days were numbered at the club.
But, in light of the fact he recently became a father, his head could still be turned by an offer from elsewhere and, according to Star sources, Portsmouth might be prepared to try and lure him to Fratton Park.
Wabara, meanwhile, may be reluctant to spend another season in League One.
The full back said he turned down several Championship clubs to join Doncaster on a short term contract last December.
Abdul Razak and Jamie McCombe are understood to have been told to find new clubs, while striker Theo Robinson is expected to be released after he was farmed out to Scunthorpe for the last month of the season.