Massive pointes deduction is quite a disaster for any parties.
Everton will need to fight hard for the survival but there is a little bit hope as the relegation is easier than last year.
PL cannot fine Man City easily. Actually, this decision is quite stupid. Nobody would accept and there is no club to respect the FFP.
Ideally, 3 points deduction and 1 transfer window ban or 6 points deduction is easier to accept.
If Everton wants to appeal, just tell them more punishments will be achieved in failed appeal.
PL will then easy give Man City punishment.