The point I was making is in relation to your question (albeit rhetorical) when is £150K a week not enough?
These players (like most people in other walks of life) will always compare what they earn with others.
Although most of us cannot relate to earning a nine figure income these lads can and do. Not only that, it doesn't take them long to get use to spending it. When they see other players Rashford (for example, who I think is one of the most overated Players in the league) earning twice his salary he might be forgiven for thinking he's under earning (relatatively speaking).
I'm not condoning what he has "allegedly" done. I'm just pointing out that for some people £1M a week isn't enough. If it was then all the world's billionaires would have retired by now.