Ex-Worcester boss Richard Hill first headed across the Channel in 2013 and he helped Normandy minnows Rouen rise from Federal 2 to Pro D2.
Rouen, the new club of Carl Fearns, have joined Stade Francais in having their opening game of the new season in France postponed due to the coronavirus.
James Johnston was a cornerstone of the 2012 Premiership title win by Harlequins, an achievement that has helped him secure a switch to Pro D2 side Rouen.
Newcastle Falcons have announced the signing of controversial former Premiership player Tom Arscott from next season.
