Aussie-born Staniforth was on France radar for years, says Galthie
The 31-year-old lock recently qualified for France on residency grounds having spent more than five years playing for Castres in the Top 14.
And Galthie took the opportunity last week to call up Staniforth for his expanded 42-man squad ahead of the reigning champions' Six Nations opener against Ireland next week.
"He was a player who we were interested in already three years ago," Galthie said of Staniforth, who was still some way off qualifying for France back then.
"He was the best tackler in the league...