Bristol Rovers boss Paul Buckle has told Ben Swallow and Charlie Clough they can leave on free transfers.
Buckle also confirmed Stuart Campbell's future at the club remains in doubt.
"Stuart won't travel [to Gillingham]. It's ongoing with his future, maybe something will be resolved soon," Buckle told BBC Radio Bristol.
"I know we won't be offering Ben or Charlie something in the summer so it was important I told them so they can sort out their futures."
The Rovers boss continued: "January is always a time when managers make decisions and we're no different."
Former Leicester and Grimsby midfielder Campbell, 34, has made 268 league starts for Rovers and was caretaker manager following Dave Penney's departure.
His current contract runs out at the end of the season, but he has failed to agree a new one and Buckle is happy with the strength of his current side.
"He's part of the squad," Buckle said. "But I feel that the midfield has done very well, (Oliver) Norburn showed he is capable in the FA Cup when Stuart was lined up to play but he unfortunately struggled with his back.
"At the moment I'm happy with the boys that are starting and the boys I have on the bench, so Stuart won't travel [on Saturday]."
Buckle also said he hoped the futures of Swallow and Clough would be sorted out soon.
Swallow, 21, signed his first deal at the Memorial Ground in 2008, but was recently criticised by Buckle following his red card in the FA Cup tie against AFC Totton, while 21-year-old Clough has recently been on loan at Bath City.
"I've given them permission to go and train with other clubs. They're more than welcome to train with us but the most important thing is now their future," Buckle added.
"We'll see what happens, if nothing materialises the probability is they'll go on loan but it was very amicable."