Northampton centre Dominic Waldouck will move to Premiership rivals London Irish for next season.
Waldouck joined the Saints in 2012, but injuries and the form of first-choice centre combination Luther Burrell and George Pisi have limited his chances.
The 27-year-old has made 44 appearances for Saints, but has played only 48 minutes in the Premiership this season.
"We're absolutely delighted with the signing," Exiles operations director Bob Casey told BBC Radio Berkshire.
"Dom is a quality player. He's a leader and great communicator on the field, with the versatility to play and inside and outside centre, and we hope he really flourishes here."
Waldouck, who won the Premiership title and the Heineken Cup during his time with first club Wasps, said: "I am really looking forward to starting at London Irish.
"I am still very ambitious as a rugby player and feel the environment being created at Hazelwood will allow me to flourish."
Waldouck has been capped at England Saxons level, but has yet to play for the senior side despite being picked for two overseas tours.
London Irish have previously announced the signing of Scotland winger Sean Maitland,New Zealand prop Ben Franks and Waratahs scrum-half Brendan McKibbin for next season, while Tom Coventry will join as the club's new head coach.