He's Ronaldo and he wants to remain so for longer than the world around him will allow. He has no interest in riding off into the sunset until the little Argentinian is no longer a threat/has done the same, and he's not prepared to relinquish anything which makes Ronaldo Ronaldo, which is a major ball ache once he starts playing up as we're most likely to see this season, unfortunately.Basically he's facing his pre-mature mid-life crisis.
Plus you don't hear Messi taking a paycut
The narcissism that drives him is also a vacuum that disrupts so much of what he orbits. I doubt he'll ever have the humility or capacity to 'do his bit' in broader team-oriented setting - you can imagine even when/if he goes back to Sporting, he'll have to be centre stage or he'd retire, for example.
We're watching his paradox unfold as we get see what will yield in him as this window's end draws ever closer with no takers on his terms. I just fear we'll be the fall guy in the end with his PR team applying the gloss to why he opted to stay.
I just hope his narcissism manifests in a positive way as in him showing the clubs that shunned him what they could have had and proving to himself/the world he's still Ronaldo. It's evident we don't matter to him, but hopefully him serving himself can be beneficial to us in a roundabouts way. It's either that or he tanks us and makes the season all about him in the negative, which would be disastrous for the manager and the collective.