I don't think it is the money, it his wife she can't settle in england and feels isolated. no matter what your family comes first.
Little Luis left for the same reason (nearly cried that day, love the little blighter).
I understand what your saying about family coming first but what I find hard to accept is he said he wanted to go to a place where his wife can fit in and speak the same language which obviously means Spain, yet he is supposodly learning Italien and wants to link up with the dastardly Benitez, as they say something is seriously lost in translation here and smells a bit funny.