Kilmarnock manager Kenny Shiels is resigned to losing his son Dean when his loan from Doncaster expires next week.
The 26-year-old has made a positive impression during his time at Rugby Park, scoring six goals in 22 appearances.
Killie's boss admitted making little headway in talks last month and now fears the club will be unable to extend the midfielder's stay.
Shiels knows Doncaster hold all the aces regarding his son and he is now planning for life without him in his squad.
"I genuinely don't think we're going to be able to keep him," explained Shiels.
"Having spoken to Doncaster, I have my doubts. It's only 10 days away.
"It's disappointing but I have to prepare without him, if that's what's going to happen.
"They see him as a marketable asset. They are calling the shots and I appreciate that.
"It will affect the team as we've lost Gary, who is creative, and we'll lose a creative goalscorer in Dean."