Iana
Player Valuation: £1m
I am pretty sure they could not as any rule changes or new rules need to be approved by the clubs(the shareholders). The PL board had the same sanction framework rejected by the clubs a few years earlier and tried to introduce a policy(not a rule) via the IC.If the commision accepted it they could have got it in the rulebook.
Thankfully they rejected it as it helps us.
If the clubs have not agreed a rule with a 2/3rds majority then it cannot apply.
I think this is why the IC were at pains to “reject” the formula in the report but ended up with a sanction that matched the rejected formula perfectly…what a coincidence!!