Glasgow assistant coach Jonathan Humphreys insisted that they are unlikely to take a chance with Scotland international Stuart Hogg for the upcoming European Rugby Champions Cup clash against Leinster at RDS Arena on Sunday.
The full-back last played during the autumn international clash against New Zealand and is on a recovery from a hip injury.
Glasgow could not quite replicate their form from Pro 14 in the European Champions Cup as they are yet to win a game from four appearances this season and head coach Dave Rennie was hoping to acquire the services of Hogg for the clash against the Irish regional side but Humphreys said they will not risk the 25-year-old.
"He is touch and go," admitted forwards coach Humphreys. "We will probably leave that decision until the end of the week.
"We certainly won't be risking him if there is any doubt. If it's not this week, though, then hopefully next.
"We're desperately keen to have him back and so are Scotland but every caution will be taken with him.
"Renns and Gregor talk a lot. They have a good relationship but we will do what is best for Hoggy.
"Hopefully he'll be back in time for the Six Nations. He's close to being back and it would be nice for him to have a game under his belt before he goes away with the national squad - and hopefully that will be the case."
Glasgow's hopes of making the quarter-final are already over but Humphreys insists this weekend's showdown is no dead rubber.
He said: "We still have aspirations to win these last two games with Leinster and Exeter.
"We're not going to hide from that and no matter what, we're still going to have a very competitive team on Sunday."