Sorry mate, I mentioned Virgil above but you're talking about Salah I assume?
The Saudis can always pay double than what we can that's for sure, but IMO Salah is after glory as well, he wants to break records and win a few more titles before he goes to somewhere irrelevant. He's after some Premier League records as well so I do believe he wants to stay with us but wants to be payed for it too. Not as much as the Saudis are offering but he must be asking for some sort of a raise to his already big salary (makes double more than everyone except Virgil i believe).
I understand the club's position of not wanting to go overboard with both his salary and the length of his contract but the least they can do is offer him one and let him refuse it, at least we'll know what Mo's motivations are.