Irish back Jared Payne has been forced to retire because of a head injury.
The 32-year-old Kiwi — who played for the Chiefs, Crusaders and Blues from 2007 to 2011 — will become Ulster's defence coach.
Payne, born in Tauranga, suffered the head knock late in the British and Irish Lions match against the Chiefs in Hamilton last June. That turned out to be his last match.
"It's been a good ride but unfortunately every good thing has to come to an end," Payne said.
"I would like to thank all of the medical professionals who have supported me since my injury...I'm extremely grateful for your considerable care and attention.