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It's not about me although all I will say is that for me it's not just abut the money. I roll my eyes when posters claim everyone would move jobs to triple their wages.That's genuinely great for you!
What if the job was better as well? That you'd be furthering your career ambitions and earning 3 times as much money and would have more of an opportunity to be internationally recognised doing your job?
The money and everything else aren't really separate at this level. Players get more money than we can pay if they go to a club with loftier ambitions and a continental reputation. It's the same parcel. Cucurella wanted to leave because he believed he is a top-level player that needed to play Champions League football to be in the Spain squad. Cucurella also wanted to leave because he'd have a MASSIVE pay-rise by moving to Chelsea, earning the kind of money we can only dream of. This can and should also be applied to Potter & pals.
IF you decide to not move to West Ham in Europe and choose a newly promoted side because they're offering considerably more in wages then that's a whole different issue we're talking about and is, because of the above reasons, an incredibly rare occurrence.