If Arsenal are going to self quarantine because they met him then presumably West Ham Burnley and Newcastle are on high alert as well?
I posted this in the covid thread, applies here also:
As regards the arsenal players self isolating for 14 days, that means the Portsmouth and West ham players will also have to because they fall into the 14 day window of contact.
In the same window, by contact between playing teams, that also includes, Newcastle, Southampton, Burnley, Norwich, wolves, Leicester......
I stopped looking here, Everton and crystal palace.
I can see them cancelling the league for a minimum of two weeks but probably three.