Manchester City and Chelsea run the risk of relegation from the Premier League after Everton's 10-point deduction set a powerful precedent, according to a former financial advisor to the champions.
The Toffees have been left reeling by the deduction, which plunges them to second bottom of the table, and plans to launch an appeal.
City face 115 alleged breaches of the Premier League's financial rules and Chelsea could face scrutiny over alleged payments connected to former owner Roman Abramovich.
Stefan Borson, a lawyer who has advised City, tweeted after Everton's news broke on Friday: 'Without seeing the judgement/award -10 points for Everton feels harsh for a straightforward FFP [Financial Fair Play] breach to me.