He made his senior Munster debut on 8 December 2013 , coming on as a replacement against Perpignan during Round 3 of the 2013 -- 14 Heineken Cup .
Casey secured a development contract with the senior Munster squad for the 2013 -- 14 season in April 2013 .
Casey made Casey 's Munster Munster debut on 8 December 2013 , coming on as a replacement against Perpignan during Round 3 of the 2013 -- 14 Heineken Cup .
Casey secured a development contract with the senior Munster squad for the 2013 -- 14 season in April 2013 .