Ospreys swoop for Leonard

The 29-year-old, who played 13 Tests for New Zealand, will compete for the scrum-half spot with Wales international Rhys Webb from next season.

"I've got plenty of experience to call on, and I always want to use that to help my team-mates," Leonard told the official Ospreys website.

"But I'm of the mindset that you never stop learning, wherever you are in life."

Leonard's last Test for the All Blacks was the 19-12 win over Wales in Cardiff in 2009 and he left Waikato to join Zebre in August 2013.