Late change for the Ospreys as Gheorghe Gajion comes onto the bench in place of Simon Gardiner.

Ospreys host Saracens in round 5 of the Champions Cup. Ospreys are rock bottom of Pool 4 without a win in their four matches, while Saracens lie in third position having recorded two victories and two losses. Saracens will be desperate for a win to remain in contention to progress to the knock out rounds. When these sides met back in round 2 Saracens thumped the Ospreys 44-3 at home.