Patrick J Adams. Picture: Bang Showbiz

Patrick J. Adams is to return to "Suits" for its ninth and final season.

The 37-year-old actor left his role as Mike Ross in the legal drama's seventh season alongside his friend and co-star the Duchess of Sussex - who was known as Meghan Markle before her marriage to Prince Harry - but he will return midway through the ninth and final season of the show.

Patrick shared a black and white photo of himself in character with "Mike Ross returns to Suits The final season" written across it in red and captioned the Instagram post: "Go time. Very excited to head back into the fray one last time. Thanks to the fans for keeping the flame alive and to [showrunner] Mr.Aaron Korsh for welcoming me back.(sic)"

According to Variety, Patrick will be back as Mike to go head-to-head against his former mentor Harvey Specter (Gabriel Macht) and Samantha Wheeler (Katherine Heigl) in a new case.

It is currently unsure how many episodes he will appear in.

The end of 'Suits' - which will return for 10 episodes on the USA Network on July 17 - after eight years on screen was announced in January.

Chris McCumber, president of USA Network and SYFY, said at the time: "'Suits' has played an instrumental role in our network's DNA for nearly a decade.

"I and everyone at USA Network sincerely thank Aaron Korsh, our partners at UCP and the entire 'Suits' family for their tremendous creativity, devotion and support over a truly amazing run."

Once it has wrapped for good, former star Gina Torres will front a spin-off show called 'Pearson', which will follow her character Jessica Pearson as she starts a new life in Chicago.