North will never forget 'amazing' Saints support
The Wales wing signed off at Franklin's Gardens by helping his team to beat Worcester Warriors 32-24 last Saturday.
North, who joined Saints from Scarlets in 2013, will be heading home this summer as he joins Ospreys on a National Dual Contract.
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Hide AdBut he can exit Northampton with Premiership and Challenge Cup winners medals, having helped Saints to a sensational double during the 2013/14 season.
"How do you sum up 5 seasons in a caption?!" North wrote on Instagram.
"I have truly loved ever second that I’ve been in Northampton. I have met some amazing people and made some great friends.
"The club and the fans are amazing, the support they’ve shown me I’ll never forget.
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Hide Ad"Thanks to the coaches, medical and S&C teams for their work.
"The biggest thanks goes to the lads. Incredible players but also incredible men. A great bunch of guys and friends for life.
"We’ve had some amazing memories that will stay with me forever. I wish the Saints the best of luck in the future. A huge thanks from me."