England winger Yarde has decided to end his spell at Harlequins after becoming reportedly unsettled with life at the Twickenham Stoop.
Having put pen to paper on a three-year deal with Sale, Diamond is looking forward to having the 25-year-old in the Sharks ranks and feels Yarde's attacking style suits the team.
He said: "He is a very exciting player and he will very much suit our attacking style of play.
"Though Marland has lots of experience he's still very young with his best years ahead of him.
"Marland fits our criteria of international class recruitment and our search for a world-class lock, prop and centre continues."