I get what you mean but I don't think any of these lads, especially now, have ever really had money problems where they think "I have to make as much as possible". If you're a 16 year old on £2k a week or whatever then really you'll never know proper desperation. I think money talks a lot for loads of them, Gordon for sure, even looking at our squad now I think Iwobi is the easiest example of someone who clearly "needs" to be wealthy and wants to be viewed like that.
I would think though if I were a top footballer at Everton, earning let's say £100k a week, I'd have no desire to leave as a fan, even if the money was much higher because what I'd earn already is life changing money and more than enough. I'd be rich one way or the other, I'd rather being rich and adored by Everton than slightly more rich and treated as just another body by Newcastle for example. Again I think us fans would have a different view though since these players are so far from normal people and the money is never enough because like Gordon and Iwobi who I mentioned, their life needs to be "flash" and they must present themselves as superstars.