Zebre hooker Oliviero Fabiani has been banned for nine weeks for biting Connacht lock forward Quinn Roux.
Edinburgh and Gloucester claim contrasting European Challenge Cup wins but there is disappointment for Worcester and the Dragons.
There are five Challenge Cup encounters on Saturday, including Edinburgh v Harlequins and Lyon v Ospreys.
A host of internationals are in action in the Challenge Cup on Friday, including Ospreys' Dan Biggar and Alun Wyn Jones.
Brive fly-half Matthieu Ugalde has been slapped with a 14-week ban after being found guilty of eye-gouging.
Ulster Rugby have signed Georgian tight-head prop Anton Peikrishvili in a bid to ease their front-row injury crisis.
Champions Cup holders Saracens have been drawn against Toulon while Bath will meet Bristol in the Challenge Cup.
Robbie Henshaw made a try-scoring return as Connacht secured a place in the European Challenge Cup quarter-finals.
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