Take a look at this from before the final. Right at the end - the reporter keeps nagging. Ron's doing his "happy here" "it's home" "the future only God knows" thing.
The interviewer jumps on the only God knows remark and follows it with, "And your agent?" at which point Ron starts laughing and then finally says - "I'll stay here in the club."
I think it's a point in his career when he's really got a choice - almost certainly nothing to lose financially by staying or going, family (and maybe friends) pulling him one way and football pulling him a differerent one. For the moment the football is in control and that's why I can't see him leaving - he wants to know how good it can get.
That said - we hear it all the time when people talk about great players - "he didn't just do it for X, he did it for Y as well" or "he dragged them from mediocre to champions". One day that kind of football challenge, coupled to the cultural attractions may change his mind. When? As Ron says - God knows!