Munster will be hopeful Simon Zebo is fully fit for a tricky trip to France to take on the might of Racing 92 next month.
Connacht stand on the verge of history this weekend.
After agreeing a National Dual Contract with Ospreys and the Welsh Rugby Union, Bradley Davies is eyeing silverware with his club side.
Ospreys and Glasgow Warriors could not be separated at the Liberty Stadium, as Dan Evans' late try earned a 20-20 draw for the home side.
Liam Williams and Hallam Amos will play in Pro12 this weekend, but Wales have not allowed Sam Warburton to feature for Cardiff Blues.
Wing Tom James showed his finishing skills in Cardiff Blues' narrow win at Munster, while Edinburgh and Newport also recorded victories.