Injury concerns cloud build-up to Ulster's URC last-eight tie with Leinster

Ulster have already achieved a double over Leo Cullen’s squad in both regular season URC games, the first being a one-point win at the RDS on New Year’s Day and then, last month, they repeated the dose at Ravenhill by triumphing 23-21.

MISSING LINK? Ulster’s Stuart McCloskey. Pic: Ben Brady, Inpho

Ulster are already facing the prospect of being without four key players for Saturday’s URC quarter-final with Leinster at the Aviva Stadium.

Ireland international centre Stuart McCloskey pulled out late from last weekend’s interprovincial defeat at Munster with a groin issue and his fitness will be assessed as this week progresses with the northern province very much hoping he can feature.