12 Dec, 14:42
Prop Cian Healy is expected to miss the start of the 2014 RBS 6 Nations after undergoing surgery on his injured ankle on Wednesday.
Ulster currently have Neil McComb as their only fit and available lock - captain Johann Muller is sidelined with a thumb injury, while Dan Tuohy and Iain Henderson are training with the Ireland squad ahead of the GUINNESS Series games.
Meanwhile, back rower Stephen Ferris followed Stevenson off the pitch early in the second half at Ravenhill. He will report to the Ireland medical team for treatment and management of his ankle injury.