Ulster-bound winger Tommy Bowe will be out for the rest of the season and will miss Ireland's tour of New Zealand, as he requires surgery to remove a haematoma.
The problem has been causing raised blood pressure in the 28-year-old and he has now played his last game for the Ospreys.
“Having discovered he was suffering from high blood pressure earlier this year, he has been put through a number of medical tests to identify the cause of the problem,” the Ospreys said in a statement.
“These tests have shown that he has, in the past, suffered a haematoma that is pushing into his left kidney, with further tests indicating that this is the reason for the raised blood pressure.
“After considerable consultation with specialists in both Ireland and Wales, Tommy has opted to go down the route of surgical removal of the haematoma in an effort to solve the problem. He is being operated on in Ireland today, before returning to Wales post-op to convalesce.
“Because of the surgery, he will not be able to play any further part for the Ospreys this season, ahead of his return to Ulster for next season,” Ospreys’ statement continues.
“Recovery time post-operation is unclear, but he could be sidelined for up to four months.”