SOMETHING had to give after last week’s disappointing performance and so it’s no surprise coach Alan Gaffney has made four changes, one positional, in the Munster side to tackle Castres Olympique in this evening’s crucial Heineken European Cup tie at Thomond Park.

Castres have dropped veterans Yann Delaigue and Richard Dourthe for their home tie with Munster at Stade Pierre Antoine tomorrow evening.

Castres 38 Neath-Swansea Ospreys 17