Deeney has every right to sit out in order to protect his family, should have no bearing on whether the league restarts though, it's just his choice. Provided teams have enough players available to complete then it can go ahead without him. If, however, teams have enough players abstaining from duty, which is also their right, then that is an end to it surely?
Personally, i don't see how it can work anyway and we should just finish the season on PPG and wait until it is safe to restart properly, however long that takes.