Meanwhile, departures from the club include Heineken Cup and Amlin Challenge Cup winner, Gethin Jenkins, who has returned to the Cardiff Blues, as well as second row, Nick Kennedy, who has joined Harlequins.
Glasgow, for their part, have signed Scotland international, Richie Vernon, from Sale Sharks along with Argentina test player, Gabriel Ascarate, who has joined from ProD2 club, Carcassonne, while the talented Johnny Barclay has moved on to Scarlets.
Cardiff Blues welcome back Jenkins following his season with Toulon and with Matthew Rees coming in from Scarlets, the club's front row options have increased. Predictably, Jamie Roberts heads the list of departing players following his switch to Racing Metro 92.
Exeter Chiefs have also been active in the market with back row, Don Armand, joining from the Stormers along with Tom James and veteran, Ceri Sweeney, who have moved from Cardiff. On the debit side, Argentina wing, Gonzalo Camacho, has joined Leicester Tigers while fly-half, Ignacio Mieres, has thrown in his lot with Worcester Warriors.