The Ospreys have side Canadian flanker Chauncey O'Toole, who will arrive at the Liberty Stadium after the 2011 World Cup.
O'Toole, capped 11 times by the Canucks, can play anywhere in the back-row, but openside is his specialist position.
He will compete with Wales preliminary World Cup squad member Justin Tipuric for the openside slot.
The 25-year-old had a stint with Glasgow last season.
O'Toole has also played for north Wales team RGC 1404.