Basically there are 4 options
1. Cancel the season
2. Postpone the season
3. Play behind closed doors
4. Just play as normal
Number 4 obviously can't happen, number 3 would be too difficult and number 2 presents too many problems, so basically the only realistic option is number 1.
So what do we do with this season becomes the big question. Again there are a few options
1. call it as it currently stands
2. decide placings on average points per game
3. Null and void
Can't do number 1 as not all teams have played the same number of games, can't do 2 because some teams have played harder games than others, some teams were starting to hit form and others were losing form so that just leaves option 3.
So how do we decide European places and promotions/relegations?
Cancel next years European competitions. Most countries will have restricted borders for the rest of the year anyway, so no European places to worry about anyway.
No promotion or relegation. Clubs don't have the right to be in the premier league anyway, so can't demand to be allowed in.
Since there is no relegation and no European qualification, you can't have a champion either. The entire season is just written off and we start making plans to play next season