Wales international Gareth Delve is in the process of backing out of an overseas agreement, to remain with Melbourne in Super Rugby next season, but Rebels chief executive Steve Boland says a deal is yet to be finalised.
Boland will wait until Delve rejoins the Rebels from the Welsh squad before seeking an update on the No.8's status beyond this season.
Delve, 29, appeared set to leave Super Rugby for the French Top 14 competition next season, but French newspaper Midi Olympique has reported Delve won't be coming to Toulon despite signing a pre-contract with the club in January.
With Stirling Mortlock announcing his retirement at the end of this season, Delve would likely take over the full-time captaincy at the Rebels if he were to stay.
Boland said he'd love Delve to re-sign but for the time being will leave the experienced forward alone as he prepares for a hopeful inclusion in the Wales team to play the Wallabies at Allianz Stadium on Saturday.
"If there was a way we were able to keep Gareth to work for everybody we'd love to do it, but at the moment the ball's in his court and we'll be giving him some space while he's in camp with Wales and we'll see what happens after the next couple of weeks," Boland told AAP.
"I guess we're waiting advice from him on where he stands in that situation. That's an issue at the moment for Gareth to be working through. He's a fantastic servant to the club."