England ace Cole missed the Blues' 2-0 win at Stoke City on Saturday, while Kalou was taken off at half-time with an ankle injury.

Scolari admitted his uncertainty about both players' availability as he confirmed the absence of Portuguese duo Deco and Ricardo Carvalho.

"I don't know [for Kalou] because it's the second time in the same leg, I wish and I think for Romania it is okay," Scolari told Chelsea's official website.

"For Cole, I say nothing until tomorrow, but Deco and Ricardo are out."

Chelsea face Romanian surprise package Cluj away, after the Champions League outsiders stunned Roma at Olimpico two weeks ago.