The livid Peter Sauber refused to broach the topic at a drivers' briefing on Sunday.
"I told them I don't want to discuss this with them (in Monaco) because there are too many emotions at the surface."
Villeneuve, 34, and Massa, will reportedly gather at Hinwil on Tuesday, prior to heading off for Germany to prepare for the Nurburgring race.
Declining to say much more, Sauber - apparently considering a 'punishment' for JV - did admit that the incident at turn one was 'very serious.'