For example a £25m bid for Clarke comes in. Do we turn that down in the hope that the 1 in 10 shot of promotion comes off? It would be naive to assume we will get similar sized bids in the summer. (on the flip we may get even bigger ones in the summer - but look at Stewart, there's no guarantees with anything)
Personally, whilst I obviously would not turn down promotion (I was devastated after the Luton semi final last year), I don't think the club is ready for promotion to the PL yet anyway. Obviously you dont turn it down if it comes because the parachute payments alone are transformational.
I'd much rather we took a high fee now, accepted that our chances of promotion slips from 1 in 10 to 1 in 15, and use the money to sign 2-3 quality promotion ready ideally already British-based players in the summer.