Ospreys have agreed to extend Rob McCusker's short-term contract with the region, the back-rower signing up until the end of the season.
Welsh international McCusker initially joined as injury cover last month, assisting with pre-season preparations ahead of the new campaign.
Although still to feature in the PRO12 in an Ospreys shirt, he played a part in each of the three warm-up games and has made a positive impression at the region's Llandarcy Academy of Sport base, earning a prolonged stay.
Speaking after extending his contract, McCusker said: "I'm really happy to be staying here for the rest of the season and hopefully longer. I've had a great welcome from everybody and I feel I've fitted in to the group well.
"It's player focused environment where information flows both ways and, to be honest, it's refreshing to be in that kind of environment.
"I know that there is strong competition in the back row but I want to fight for a place. I hope that I'll do enough to get some game time sooner rather than later. That competition can only help the team."
Head coach, Steve Tandy, added: "Rob had already shown that he is a good addition to the squad. He is a leader who has slotted smoothly into our environment. He brings huge experience to the group, not only challenging things but showing real professionalism in how he has quickly got up to speed with what we expect from a player in his position.
"Coming into pre-season very late means he has had some catching up to do but we are already seeing big improvements and, as the season progresses, we would look to him to play a big role for us, particularly during international windows."