He would be stupid not to demand close to 100k per week wages.
The 80k that has been reported is really a pittance, given the taxes in England and compared to what players in his position/status make at other top clubs.
As far as I'm concerned these are just regular contract negotiations between a player and the club. It's not like he's holding us out for a ransom or threatening to leave. He's already said that he's happy here and would like to stay. It doesn't mean he has to accept whatever low ball offer the club makes him.