Payne also discussed Gloucester's potential danger men and the current strength in the Munster squad.
The former Natal Sharks and Swansea player said: "It is always dangerous to single out one player because Gloucester have strength all over the park, but Lesley Vainikolo is special - although I have been more impressed with him in the Heineken Cup than for England in the Six Nations as he clearly can improve in a few technical areas and a player's form is linked directly to team form.
"However, you cannot buy or be taught strength and in pure physicality he has it all.
"Competition for places at Munster is so much keener than at any stage in the last five years. Nothing is taken for granted any more, and the only motivation we will need on Saturday will be the nature of last year's quarter-final defeat at Llanelli Scarlets.
"That means the hunger that is always there with Munster is now more so than ever."
ERC have confirmed that Munster's additional players for the knock-out stages are hooker Sean Cronin and back rower John O'Sullivan.
Meanwhile, for fans who cannot travel to Kingsholm or view the match on the television, RTE Radio will broadcast Munster's clash with Gloucester live on Saturday.
Commentator Michael Corcoran will be joined by former Ireland lock and manager Donal Lenihan as they describe the action and the atmosphere.
The game will be available on all RTE Radio 1 wavelengths - FM, LW 252 - and on RTE's new digital radio service, as well as the RTE website. You will be able to get score updates on both www.IrishRugby.ie and www.ERCRugby.com.