Recent scrum-half signing, Australian Matt Henjak, returned home today after being called up by the Wallabies for their European tour next month.
It means Jeremy Staunton will have Samoan Steven So’oialo as his half-back partner.
Henjak joined Quins from ACT Brumbies last month.
Meanwhile, Munster, who are due to name their team tomorrow or Friday, expect to have John Kelly in the centre and Paul Devlin on the right wing.
Kelly impressed when replacing Shaun Payne during the Celtic League victory over Cardiff last Saturday.