Early rumours are that Prendergast will start. From Ruaridh O'Connor though, and whike he's probably Munster fans' favourite journo, he's not the most accurate for shouts like this.
If we do go this way it's an interesting contrast with England who are likely to go the other way with their two 10s. Crowley and M Smith are both 10s who want to break the game up and score off an unstructured defence. Prendergast and F Smith are far happier and more adept at inflicting the opposition to death by a thousand cuts over the period of an attack / half / game.
Obviously both close calls, my personal preference is to let the Prendergast / F Smith type 10 start and use Crowley / M Smith as points of difference off the bench. The English pair are a year ahead in development to their Irish counterparts too (although Crowley is the most accomplished of the 4 currently) so a good learning opportunity for our lads.
I doubt the battle of the 10s will be the winning and losing of the game, it was neither side's strength last year but fun none the less because I think last year both teams became unstuck a few times as they didn't really know what they wanted to get out of their outhalf play.