Harlequins have signed former England wing Paul Sackey after Ross Chisholm and Ollie Lindsay-Hague both suffered long-term injuries in the pool stages of the JP Morgan Premiership Sevens.
Chisholm is expected to be out for the whole season after tearing his anterior cruciate ligament, while Lindsay-Hague could be sidelined until November with a shoulder injury.
With Mike Brown also set to miss large chunks of the season on England duty, Harlequins turned to Sackey to help plug the gaps in the back three.
Harlequins director of rugby Conor O'Shea said: "With the unfortunate injuries to Ross Chisholm and Ollie Lindsay-Hague, together with the almost certain loss of Mike Brown to international duty in the autumn, to get the chance to sign a player of Paul Sackey's experience and ability is great for the club.
"Paul is in good shape and I know how much he still wants to succeed. He wants to return to London after his time in France and finish his career on a high in his home country.
"I'm sure that together with our other experienced wingers, Ugo Monye and Tom Williams, he will pass on his extensive experience to the other young outside backs we have here."
The 33-year-old former Wasps and London Irish player returns to the capital after three years playing in France, first for Toulon and then for Stade Francais.
"While I enjoyed my time in France, I wanted to return to England to finish my career. To be given the chance to do so at Harlequins is very exciting for me," said Sackey.
"As a Londoner I know the club and its players very well and have admired the club's style of play over recent seasons. I'm looking forward to being a part of the squad as it seeks to continue its recent trophy-winning run."