Since making his All Blacks debut in 2009, Franks has notched up over a century of international caps for his country, lifting the Webb Ellis Cup twice along the way – on home soil in 2011 and then at Twickenham in 2015.

But having never before plied his trade outside of New Zealand, Franks is relishing the prospect of a fresh challenge in northern hemisphere rugby.

“I’d like to thank Chris Boyd and Northampton Saints for showing faith in me and giving me this opportunity to come and play in the Gallagher Premiership,” he said.

“I’ve always taken a keen interest in northern hemisphere rugby so I’m looking forward to coming to the UK and proving myself, while the prospect of playing at Franklin’s Gardens in front of Northampton’s passionate supporters is hugely exciting for me and my family.

“I’d also like to thank the NZRU and the Crusaders for their continued support, and for allowing me to live out my dream.”

A powerful front rower and dedicated trainer, Franks is renowned for his scrummaging ability – but the tighthead’s work around the field will also impress the Franklin’s Gardens faithful, with his big hits in defence often catching the eye.