I'm sure that we all want to earn as much as we can. That's not really the point though, is it?
He agreed to a new deal and then almost immediately got injured and hasn't played since.
If he wants more money, then he should negotiate another deal or put in a transfer request and join another club.
Chatting a load of crap to the worst paper in the country is a disrespectful and unprofessional way to go about things.
Compare and contrast with an interview that he did about Pochettino last September:
http://www.tottenhamhotspur.com/news/first-team/general/danny-rose-on-mauricio-pochettino-020916/
How does he expect the manager to react to his behaviour now?