Bristol scrum-half Will Porter will move to Harlequins in the summer.
The former England youth international played 58 times for Wasps before moving to Bristol in October and his signing comes after Danny Care extended his stay at the Stoop last month.
“Will is a great operator who has excelled with two top Premiership sides,” said Quins boss Tabai Matson.
“He will add further quality depth at scrum-half for us and we’re looking forward to seeing how he fits in this summer.
“We feel that his skills will suit our way of playing well and it will be exciting to see what he can do within this Quins side,” Matson added to the club website.