England and British and Irish Lions prop Joe Marler signs a new deal to stay at Harlequins until 2021.
Harlequins flanker Luke Wallace will have surgery after dislocating his hip in a pre-season match against London Irish.
Former England captain Chris Robshaw signs a new three-year contract with Premiership side Harlequins.
Ruaridh Jackson leaves Harlequins to make his return to Glasgow Warriors as the fly-half aims to boost his Scotland career.
Audio & Video
Harlequins prop Kyle Sinckler says England team-mate Ben Te'o is the worst room-mate he has ever had.
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What's on BBC Sport this week
This week's sport on the BBC includes the Challenge Cup final from Wembley, England v West Indies in the second Test at Headingley and the Belgian Grand Prix.