Johann Muller and Rory Best are poised to provide unbeaten Ulster Rugby with a double boost ahead of their key Heineken Cup Pool 4 double header against Northampton Saints next month.
Both clubs are former European champions and go head-to-head under the Franklin's Gardens floodlights in Round 3 on Friday, 7 December, with Ulster on nine points and the Saints on six points. The return tie will be played at Ravenhill eight days later.
Influential captain and former Springbok lock Muller picked up a thumb injury in the Heineken Cup win over Glasgow Warriors at Scotstoun last month but is ready to resume action.
Former Ulster skipper Best has been sidelined with a neck injury suffered against Newport Gwent Dragons but has recovered well and could return to action earlier than expected.
Ireland squad members Dan Tuohy, Iain Henderson, Luke Marshall, Craig Gilroy, Paddy Jackson and Darren Cave are also available.
Chris Henry and Ruan Pienaar have earned a week off after playing in all three November internationals for Ireland and South Africa respectively, but both will return for the challenging Heineken Cup tests against the Saints.
And Paddy Wallace, having played a lot of rugby in recent weeks, is also rested ahead of the European contests.
As part of the build-up to next month's Cardiff 2014 Heineken Cup and Amlin Challenge Cup finals weekend, ERC has joined forces with the WRU, Cardiff Blues and adidas to develop an annual grassroots community rugby programme targeting young players.
The Ulster Rugby full back, Jared Payne (No 15), has been suspended for two (2) weeks following an independent Disciplinary Hearing in Dublin arising from the Heineken Cup quarter-final match against Saracens at Ravenhill Stadium on Saturday, 5 April.