Northampton Saints have announced that Alex Corbisiero will leave London Irish in the summer to join them.
The 24-year-old says that he is ready to embrace the "new challenge" as he arrives at the club with 18 England caps under his belt.
"I've really enjoyed my time at London Irish and am grateful for everything that the club has given me," Corbisiero told the club's official website.
"I'm looking forward to what will be a new challenge at Saints next summer. There is a great culture and hopefully I can help the team succeed whilst continuing my progression as a player, and I'm sure that Franklin's Gardens will be a good environment for me in that regard."
The club have also extended the contracts of current first-team players Alex Waller and Tom Mercey.