Jackson said on Thursday that it looked like eight first-team players would go along with three from the Under-20s squad while loan players Paul Willis and Paddy Boyle could also be moved off the payroll, with two others still negotiating.
The club confirmed seven experienced players had definitely left - Jordan McMillan, Joe Cardle, Paul Gallacher, Stephen Jordan, Andy Dowie, Andy Barrowman and Andy Kirk. Former captain McMillan has already found a new club after signing for Partick Thistle.
Jefferies revealed the eighth first-team player referenced could have been either John Potter or Dargo but he hopes the experienced pair can stay at East End Park having both helped the Under-20s reach the SFA Youth Cup final.
Jefferies told the club's official website: "It is complicated because one of them had to go, so that would probably make the eighth but John Potter is in charge of the 20s and John will take that.
"We have tried to make a case for keeping Dargo because I have lost a lot of experienced players but also because very shortly he is looking to go into coaching.
"He wants to stay on and he is prepared to take a massive cut just to hang on there. He was part of the team that took the youth team into the cup final and he is responsible, along with John, for a lot of these players making the first team. We are trying to keep him but officially Dargo might be the one to go. That would be eight but that is still be to finalised.
"It could be a case of him still being about here and involved and we will try our best to try and make that happen. If we can't then he will be the one to go. He understands that, he has been fully aware of that but it has been a difficult one for him as well because he can go away like the rest and claim his benefits."
Assistant manager Gerry McCabe was unsure of his job status with Jackson still to finalise the non-playing staff but Jefferies is optimistic he will stay on. Coach Neil McCann already worked for free. Meanwhile, the club revealed that only two Under-20s players will leave. Jordan Brown left last month and goalkeeper Steven Mayne was on loan at Rosyth.
The club added that 18-year-old Jack Bruce had "initially been told he was leaving but that will not happen after a backer stepped in to fund his wages".
- Sports & Recreation