Bottom-of-the-table Newcastle beat Sale in a feisty game, in which Falcons lock Calum Green is accused of biting.
Former South Africa lock Stephan Lewies, Leicester flanker Will Evans and Newcastle second-row Glen Young are to join Harlequins in the summer.
United States lock Greg Peterson will join Newcastle Falcons in the summer on a two-year deal.
Exeter Chiefs sign lock Will Witty from Premiership rivals Newcastle Falcons on a two-year deal, starting in 2019-20.
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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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