ULSTER have been boosted by the return from injury of Ruan Pienaar and back-row forwards Iain Henderson, Chris Henry and Roger Wilson into the squad to face Leinster at The RDS on Saturday evening (6.15).
Coach Mark Anscombe will also have Ireland international hooker Rory Best and wing Craig Gilroy in order to check Ulster's slide from the top to third in the Pro12 League.
Saturday's match looks set to be a sell-out but tickets are currently still available to buy online at www.leinsterrugby.ie
NEW ZEALAND'S Chris Pollock, South African Craig Joubert and France's Romain Poite will referee the test matches in Australia during the British and Irish Lions tour in June and July.
Pollock will referee the first Test in Brisbane on June 22, with Joubert in charge of the second in Melbourne on June 29 and Poite the final test in Sydney on July 6.
Australian Steve Walsh will take charge of the tour opener between the Lions and the Barbarians in Hong Kong on June 1.
New Zealand's Glen Jackson, South Africa Jaco Peyper and Frenchman Jerome Garces will also take charge of matches.
ENGLAND have added Exeter director of rugby Rob Baxter and Saracens defence specialist Paul Gustard to Stuart Lancaster's revamped management team for their summer tour of Argentina.
Baxter and Gustard have been recruited to fill in for Graham Rowntree and Andy Farrell, who will be on British and Irish Lions duty at the same time England embark on their four-match, two-Test trip to South America.
Lancaster will also be supported by Mike Catt, the attacking skills coach who landed a permanent role in the England set-up after impressing on last summer's tour of South Africa.
Baxter masterminded Exeter's rise from the Championship into the Heineken Cup and he was named Premiership Rugby's coach of the year for the 2011-12 season.
Gustard runs the meanest defence in the Aviva Premiership, with table-topping Saracens having conceded just 17 tries in 18 matches so far this season. England play two midweek tour matches and two Tests against the Pumas, with the opposition and venue details due to be finalised in the coming days.
ULSTER SQUAD (v Leinster) - Forwards (15): N McComb, C Black, R Best, R Diack, C Henry, D Tuohy, L Stevenson, J Muller, N Williams, R Herring, K McCall, R Lutton, T Court, I Henderson, R Wilson. Backs (10): R Pienaar, J Payne, C Gilroy, P Marshall, P Nelson, M Heaney, P Jackson, S Olding, D Cave, A Trimble.