There are five Irish players among the 15 nominees for the EPCR European Player of the Year 2018 award.
Head coach Steve Tandy has left Ospreys after six years.
Lee Kiss will have to plan without Stephen Donald, his proposed switch to Ulster having run aground.
Leinster coach Leo Cullen insists that Leinster are under no illusions ahead of their Champions Cup quarter-final against Saracens in March.
Munster booked their spot in the Champions Cup knockout stages with a six-try, 48-3 demolition job on Castres in Pool 4 at Thomond Park.