I mean, their fans are telling me their screwed if they go down. I guess they know more about it that you or I.
As fans they would say they're 'screwed' though as that's a typical emotive response from a fan of an established PL club at serious risk of relegation.
The reality is though in the short term they'd probably be fine if they went down - which I personally think they won't now anyway - as they have a number of intangible assets they can sell in order to raise revenue to agree settlements with players that are more difficult to move on, pay off any remaining transfer instalments from previous years and cover operational costs.
Through the sales of Richarlison, Pickford and Calvert-Lewin alone, Everton are likely to raise around £100m at least. Perhaps more if you believe the purported valuations in the press. Then I'd imagine they'd be able to get a reasonable fee for Kean as well.
They've also already begun a massive cost cutting exercise over the past year after Digne was sold in January and Rodriguez, Bernard, Walcott and Bolaise have been moved on.
In the summer they're likely to rid themselves of a couple of higher earners as well as Delph, Sigurdsson and Tosun will also leave on frees. If they were to go down, Allen, Mina, Doucoure and Coleman's contracts expire in 2023 so I presume Everton would either receive nominal fees or they'd either be loaned out/contracts would be taken over/settlements would be agreed. Also Van De Beek/El Ghazi will return to their parent clubs in the summer.
With the vast majority of their high earners gone and money in the bank from sales as well as from parachute payments, I really fail to see how they're screwed if they were to be relegated? The only real issue they'd have to contend with from a player POV is Alli but there are ways and means around that deal to avoid any upfront fees so I suspect they'd be able to loan him out