Harlequins sign Fiji internationals Vereniki Goneva and Tevita Cavubati from Newcastle Falcons for 2019-20.
Newcastle Falcons sign lock Sebastian de Chaves from London Irish on a one-year deal.
Sale sign flanker Mark Wilson for next season, second row James Phillips signs a new deal and back James O'Connor departs.
Captain Will Welch signs a new four-year contract at Newcastle Falcons, despite relegation from the Premiership last term.
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Newcastle Falcons have chance to impress in their St James' Park showcase against Northampton, says fly-half Toby Flood.
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