Harlequins look set to be without centre Jordan Turner-Hall for the next two rounds of action after he was ruled out with a cheek injury.
The Amlin Challenge Cup winner picked up the injury in his side's 13
th victory of the season against Newcastle Falcons at the weekend.
And after consultation from a specialist is was revealed he would not need surgery but will be out of action for four weeks.
Harlequins have started the season in style and currently top the English Premiership and are level on points with Toulouse at the helm of Pool 6 in the Heineken Cup.
Next up for Quins in European action are back-to-back games against Toulouse, the first taking place on Friday December 9 at the Stoop.