*TMZ is reporting that Usher’s ex-wife Tameka Foster could be forced to move out of his Georgia mansion in less than 60 days if he decides to put it on the market – and she is “freaking out” about it.

The couple, in the midst of trying to settle a nasty custody dispute, is deadlocked in mediation – with the biggest obstacle being Usher’s Georgia home.

Tameka’s currently living there — but under the divorce settlement Usher can sell the property whenever he wants, as long as he gives her a 60-day notice.

According to TMZ, Tameka fears Usher is going to pull the trigger, leaving her buried in legal debt with no place to live — so she’s asking him for a permanent home for her and their kids.

Usher has reportedly rejected the request, saying he’s already paid her enough.

The trial continues later this month.