Ulster have released second row Lewis Stevenson from his contract, allowing him to join Exeter Chiefs with immediate effect.
Stevenson was under contract until the end of the season, but having started just four games during this campaign, an early release was agreed to allow him to explore other options.
The 31-year-old lock had a spell with Exeter during the 2008/09 season, before a two-year spell with Harlequins and then a move back to Belfast in 2011 to join Ulster.
Commenting on his departure, Stevenson said: "I am extremely proud to have played a part in this Ulster team over the last five seasons. Every time I pulled on the shirt it meant something to me.
"However, the time is right for me to face a new challenge and I am excited about being part of Exeter Chiefs again. I appreciate how Ulster has handled this and I wish them every success for the rest of the season."
