I mean, If I were the player/ his agent, I would demand a contract which reflects my valuation. If Everton value him as high as 70m, then it makes sense the player will demand a contract which represents that value. We were reportedly offering 160, you priced him out of a move so surely will compensate him with a very similar contract?
If I got an offer from another company doubling my wages, I probably wouldn't be happy if my current employer did not match that if they were so adamant on keeping me. I'm sure he'll be happy to stay for now but I would be extremely surprised if he accepted anything less than what we offered or at least close to that.
You will need to get the wallet out. I personally don't know any player valued at 70m who is on about 60-80 k personally, maybe you do?