Glasgow Warriors head coach Sean Lineen is waiting on injury news surrounding Graeme Morrison but is hopeful the knee blow is not as serious as first feared.
The Scotland centre, 28, was carried off the Firhill pitch 13 minutes into Glasgow's 1872 Cup first-leg win over Edinburgh, also a Magners League match.
"I don't know how long he's going to be out but I understand at the moment it's weeks rather than months," said Lineen.
"He's a crucial player for us and for Scotland. I really feel for him."
And the Warriors boss added: "He's been playing really well for us, but he'll get the best treatment and he'll be back as soon as we can get him back."
Scotland coach Andy Robinson will be fretting over the prognosis from the medical team, with Scotland's Six Nations campaign beginning in France on 5 February.

I'm confident the guys will be relishing the challenge of going over there and trying to emulate the double
Graeme Morrison looks ahead to the 1872 Cup second leg
Morrison told the Warriors website: "I took a bit of a bang on my knee. I'm not sure what the situation with that is, so the next few days will be vital recovery-wise.
"Hopefully, it won't be too long until I'm back out there with the guys."
One certainty is that Morrison will not be taking to the pitch at Murrayfield for Sunday's return leg in the 1872 Cup.
However, he is backing his team-mates to repeat last year's feat of home-and-away wins in the event.
"I think it's vitally important that you win your home leg and that'll stand us in good stead for next week," said the 2003/04 signing from Glasgow Hawks.
"Obviously going over to Murrayfield to play against them on their home patch will be a different challenge and it's something we have to really get up for this week.

Morrison is challenged by Edinburgh's John Houston at Firhill
"I'm confident the guys will be relishing the challenge of going over there and trying to emulate the double, which is something we did last year."
Reflecting on the Firhill leg, he added: "I think both teams came out and really fronted up.
"There was a lot of aggression in that game and you could tell from some of the collisions that were going on that there was certainly no love lost between the two teams.
"The positive from a Glasgow perspective is that we managed to score three tries and win the game."
The physicality of the match was acknowledged, too, by Lineen, who says he expects the return match to be "a bruising encounter".
"When you get a game like this, players know each other so well there's always going to be that little bit of niggle," said the former Scotland international.
"There's lots of rivalries going on right across the field
"They're going to raise their game, so we have to raise ours. It's going to be another full-blooded affair."

This article was posted on 29-Dec-2010, 17:43 by Hugh Barrow.