Champions League -04/11/2009
McCulloch passed fit
The former Scotland international has recovered from a thigh strain and is enters into contention to take a place in Walter Smith's starting XI.
At the back, Danny Wilson could get his first European start in defence while Madjid Bougherra, Pedro Mendes, Kirk Broadfoot and Maurice Edu are all missing.
Meanwhile, Gers boss Smith has refused to be drawn into any mind games with opposite number Dan Petrescu after the Unirea boss claimed his own players were unlikely to pick up any more points in the competition.
The former Chelsea star revealed how he made a bet with his players they would be unable to follow up their impressive 4-1 victory at Ibrox with another win over the Scottish champions in Bucharest.
He attempted to play down his side's chances by claiming Romanian teams simply do not have the mentality to build on positive results.
"I hope that's the case," Smith smiled.
"We want to try and win the game and that's all that matters to us.
"We have to show the way we played in the last game wasn't typical of our performances. Certainly, we played better in the other two games than we did in that game at Ibrox."
Rangers currently prop up Group G with just a single point from their opening match in Stuttgart, with 4-1 defeats against both Sevilla and Unirea leaving them in a precarious position.
Defeat in Bucharest would spell the end of Rangers' hopes of qualifying for the knockout stages and, for that reason, Smith refused to look beyond Wednesday night's match.
He said: "We were asked at the end of the last game how we felt about qualifying and, after the way we played in the last game, we can't look any further than this game.
"To take something from this game will be vitally important for us and we will attempt to do that and it will have to be a far better performance than in the previous match."