Whatever's decided about this season (and, so far, I've seen 14 different suggestions) my guess is that it won't be the PL making the decision. I'd say that there has to be concerted European-wide response and the same action across all European leagues.
The problem with that approach is four extra games. This means the season would end later - in a summer when the postponed Euros will take place. That could mean the 21/22 season starting later but we already know the 22/23 season will start earlier because of the WC break (and they have to fit...