The Zimbabwean has been struggling to live up to the expectations at Naturena because of injuries, and has still not played this year.
The German tactician reckons Billiat should be fit in the next two weeks and might play in the first round of the Nedbank Cup against Royal Eagles on 8 February if he pass a fitness test.
"Khama in mid-December we took him out to strengthen him. His last game was on December 22 in Maritzburg and after that we took him out," Middendorp said.
"It can be possible that we get him right in the next two weeks but if we need more time, then we will do that."
Billiat has some time to prove he is ready as Chiefs are not in action this weekend, with their next Absa Premiership match on 15 February against Maritzburg United at FNB Stadium.