Dineen gets his chance as Keith Earls recovery from injury prevented him taking a full part in training this week. Earls is named on the bench
It will also be a last Thomond Park Stadium appearance for Lifeimi Mafi and for Tomas O'Leary both of whom depart these shores at season's end for pastures new.
The prize for a Munster win is a trip to the Liberty a week from now for a semi final joust with Ospreys with Glasgow, home to Connact tomorrow, odds-on to provide Leinster with their warm-up opposition a week ahead of the Euro final.
Munster: F Jones; J Murphy, I Dineen, L Mafi, S Zebo; I Keatley, C Murray; W du Preez, M Sherry, BJ Botha; M O'Driscoll, P O'Connell; D Ryan, T O'Donnell, P O'Mahony. Replacements: D Varley, D Kilcoyne, S Archer, D O'Callaghan, P Butler, T O'Leary, S Deasy, K Earls.