"I'm thinking as if I'm going to be here forever," Caddy said.
"If I think of wanting to go home all the time it'll affect my footy so I'm going in with a mindset of this is where I'm at and hopefully be here forever."
http://www.afl.com.au/news/newsarticle/tabid/208/newsid/128057/default.aspx
So, I read this as he's playing with an adjusted mindset in order to play his best, rather than that he has chosen to stay permanently. Fingers crossed.