Ulster coach Brian McLaughlin has made four changes in personnel for the refixed Magner’s League tie against The Ospreys at Ravenhill tomorrow.
Centre Ian Whitten, prop Bryan Young, lock Dan Tuohy and number eight Robbie Diack are all promoted to starting action. Ireland U20 Nevin Spence may make his debut from the bench.
Ulster assistant coach Neil Doak said: "With our last game against Cardiff providing a ten-day window to recover and prepare for the Ospreys on Tuesday night, it has given us the opportunity to get a few bodies back on board.
"We have to see how things work out with regards to fitness, but the aim is to push to win all the remaining games.
"We have two games at home and two away left, so we have got to make sure we are ready to put in a performance, in what is sure to be a very physical challenge tomorrow night”.
ULSTER (v The Ospreys): Paddy Wallace; Andrew Trimble, Darren Cave, Ian Whitten, Simon Danielli; Niall O'Connor, Isaac Boss; Bryan Young, Rory Best, BJ Botha, Ed O'Donoghue, Dan Tuohy, Stephen Ferris, Chris Henry (capt), Robbie Diack.
Replacements: Andi Kyriacou, Tom Court, Ryan Caldwell, David Pollock, Paul Marshall, Ian Humphreys, Nevin Spence.