Ben Blair has had an injection in his knee and should be back in full training in three days while Xavier Rush has tweaked his groin and may not be fit for next weeks match against Bourgoin. Rhys Thomas is rested. Captain .
And Blues coach Dai Young says his side's impressive victory over Saracens can boost them for the tough Magners League trip to Ravenhill.
"A lot of people doubted we had the character and strength of will to win away," said Young after the Blues' first ever competitive win in England.
"We're building and if we're not the finished article we're getting there."
Ulster squad: Backs: Bryn Cunningham, Andrew Maxwell, Scott Young, Paul Steinmetz, Kevin Maggs, Paddy Wallace, Andrew Trimble, David Humphreys, Adam Larkin, Isaac Boss, Kieran Campbell.
Forwards: Justin Fitzpatrick, Bryan Young, Declan Fitzpatrick, Rory Best, Paul Shields, Justin Harrison, Matt McCullough, Tim Barker, Stephen Ferris, Neil Best, Kieron Dawson, Neil McMillan, Roger Wilson.
15. Nick Macleod 14. Chris Czekaj 13. Jamie Robinson 12. Marc Stcherbina 11. Rhys Williams 10. Nicky Robinson 9. Ed Fairhurst 8. Mark Lewis 7. Ben White 6. Scott Morgan 5. James Goode 4. Deiniol Jones 3. Gary Powell 2. Duane Goodfield 1. John Yapp
16. Gethin Jenkins 17. Gareth Williams 18. Bradley Davies 19. Martyn Williams 20. Wayne Evans 21. Tom Shanklin 22. David Flannigan