Hi Wab2009 & welcome.
It might be a good idea to check out whether he still goes on My Space. If he does, then you could try contacting him again there.
In a year, he may have found himself a girlfriend ~ or he might be wishing that you were still in Chicago.
You don't want to put him under pressure, or feel rebuffed, but you do want to give your friendship / relationship a chance, so why not just say something casual like:
'Hi! Long time, no see. But that may be changing because ~ guess what ~ I'm moving back to Chicago.
Perhaps we could meet up? What do you think?'Would you feel comfortable with that?
Good luck!