I'm afraid I'm another Brighton fan. Marc Cucarella has made it known that if the opportunity arises he can't turn you guys down. What he hasn't made public is if the opportunity doesn't arise would he still be happy to stay at Brighton.
At the moment it seems like he will be happy to stay if he doesn't get the opportunity, but as of yet you guys haven't bid so his happiness hasn't really been tested.
I understand that you guys have a valuation that might seem fair when it comes down to market value, but as we don't want to or need to sell (part of needing to sell is about player happiness) you have to go above it.
I think if you want him you will get him, but I also think that if you don't pay a lot of money then he will stay with us for another season.