Harlequins plan to make an official announcement about their team management on Monday amid reports Paul Gustard is to leave England to join the Aviva Premiership club.
England defence coach Gustard has been linked with a move to the Twickenham Stoop, just 15 months prior to the 2019 Rugby World Cup in Japan.
The former Leicester, London Irish and Saracens flanker is under contract with the Rugby Football Union until after the 2019 tournament and is due to tour South Africa with England this summer.
Gustard has worked with England boss Eddie Jones since January 2016. He helped England to back-to-back Six Nations titles, but Jones’ men finished fifth this year.
Harlequins finished 10th in the Aviva Premiership and director of rugby John Kingston in April revealed he would be leaving at the end of the season, despite agreeing a contract extension in January.
Jones last week dismissed reports of the possibility of Gustard leaving as “rumours”.
The Australian also said there was no contingency plan in place in the event of Gustard leaving.
Jones said: “I don’t have a contingency plan for staff, I don’t have one for every staff member. If a situation arises then I’ll deal with it.”