The Heineken cup returns tonight as Ulster host Aironi at Ravenhill , in the nights other matches Harlequins host Toulouse and Cardiff meet Edinburgh.
Leinster , Munster and Connacht will all name their teams today for their matches over the weekend.
Leinster are away to Bath on Sunday while Munster face Scarletts in Wales tomorrow, Connacht welcome Gloucester to the Sportsgrounds tomorrow.
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Munster winger Simon Zebo has been given the all clear to play following an ankle injury in training this week
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