Nine of Costello's squad were involved with Munster in the RaboDirect PRO12 game in Italy, while Development scrum-half Cathal Sheridan, was on the bench that day.
With the likes of JJ Hanrahan & Niall Scannell involved with the Grand Slam chasing Ireland Under 20s and Tom Gleeson John Quill and Shane Buckley on the injured list, the Munster A squad totals 17 but replacements from the Development side can be used if required.
Munster A: Sean Scanlon; Luke O'Dea, Ivan Dineen, Declan Cusack, R O'Mahony; Scott Deasy, Duncan Williams; Dave Kilcoyne, Sean Henry, John Ryan; Brian Hayes, Ian Nagle; Billy Holland capt, David Wallace, Paddy Butler, Mike Sherry, S Tokula,
Munster Development: Darren Mooney (UL Bohemians); Aaron Cahill (Young Munster), Corey Hircock (Garryowen), Cian Bohane (Dolphin), Conor Kearns (Dublin University); Jonathan Holland (Cork Consitution), Cathal Sheridan (UL Bohemians); James Cronin (Dolphin), Andrew Cudmore (Cork Constitution), Alan Cotter (Young Munster); Darren O'Shea (Dolphin), Ed Kelly; (UL Bohemians) Cathal O'Flaherty (Cork Constitution), Brian O'Hara (Cork Constitution), Ryan Murphy (Dolphin). Replacements: JP Cooney (Garryowen), Peter O'Shea (Garryowen), Eddie Rossiter (UL Bohemians), Darren Gallagher (Young Munster), Lloyd Foote (Cashel)), James Ryan (James Ryan), Brian Haugh (Young Munster), Andrew Burke (Young Munster),, Harry McNulty (Dublin University), Ray Moloney (Young Munster).
Referee: Peter Fitzgibbon.