I think he's too expensive, and he's too old to spend that kind of money on. I think from this year on it is downhill for him. So I would think any team willing to spend say 100 million on Ronaldo would be much better off buying 10 young players and they would spend less. He is a great player but anyone over 30 is on the downhill curve, that includes Messi who turned 30 today.
So my bet is he stays with Real Madrid.