Seems to me he fancies himself as a better player than everyone else views it. One of his team needs to honestly tell him 'what he's worth' rather than blowing smoke up his arse.
To reference 'that' interview again he is determined to end his career with a trophy apparently, and don't imagine a club looking like winning things other than the Championship would have come in for him. (Funnily enough, excluding the Italian charity shield Milan haven't won a trophy since 2011?)
Maybe he realised staying at Spurs on £60k odd per week is much more than he's worth, and perhaps if he got on with training hard, released an interview about loving to play for Spurs again, he may get back in this side actually looking like serious trophy contenders ahead of the Euros - prepared to fight for a place in the team rather than expecting to start every single game. Mourinho seems far too stubborn for that kind of nonsense - I seem to remember him saying something on the Amazon doc along the lines of 'a player will know if I don't want them'.
He's 30. To say his career is, or should be over seem harsh to me. With the right attitude and application I see no reason why he couldn't worm his way back in the squad come January as backup to Reguilon - using Davies as a LCB should we use a back 3 with wing backs or whatever. Seems very unlikely but not impossible. Sadly I just don't have any sympathy in this lads case when I perhaps should.