I can certainly sympathize with someone who's seeing other, lesser even, players getting more money than me.
But the man signed a contract that at the time was fantastic, surely he knew that other players would eventually get bigger contracts than he did, that's just the way the salary structure works. TV contracts get bigger and some team overpays somebody, and that "sets the bar". If you don't like that, then sign 2-3 year deals.
Julio could have gotten hurt, not gotten better, been suspended or gotten worse; the team took that chance and paid him. Now that it all worked out for the good for Julio he wants to go back in time and re-do his contract.
Tough dude, tell you what, I'll play out your deal for half what you're going to get.
And be set for life at the end of the deal...