He has been linked with Liverpool, United and City before his move to PSV and his recent positive run in the side.
If he was available, I honestly think there will be suitors far beyond PSV interested, who will pay a lot more money.
Our gamble, is what figure are we happy to be compensated on that potential. Let's say there is a potential of a 50m defender in there. At what figure do we say we are happy to take cash, while not being burdened with a player still learning on the job? I think 20m+ would be approaching that zone, but I'm sure there will be a wider range of views.
A couple of other variables come into it mate. What league we are in for one - there may be a fire sale. Thats the nuclear option.
If we stay in the PL, a lot will come down to the lads opinion - he sounds like he's enjoying himself, his contract runs another two years from next summer, so we are offering him a new one shortly and giving him opportunities or other loans or he's not signing one. How Arsenal strategically managed Saliba may be worth a look at.
We are massively overstocked at centre half - so we need to downsize that area and see what we can realistically offer the lad - Dyche can point to the likes of Keane, JT, Mee, Collins as all highly paid PL defenders he developed. We may dangle improved terms on a deal.
If we have a low threshold for selling him and he has one to leave, then i think we are in a strong enough position, we've taken in a lot of revenue this financial year - so we dont need to sell in the way we did during the Richarlison fiasco last summer, so we have a fair bit of leverage to get a good deal if required.