Well, isn't that a little strange? He apparently played 166 matches over 6 years for Argentinos before, what you say is his beloved club, Boca finally thought he might be worth getting? Diego of all people? That doesn't make a whole lot of sense. And then he joins his beloved team for only a single season before he flies out? Finally, at the very end of his career he spends 2 seasons with Boca.
Pardon me if I find this counter intuitive, but how does a diehard Boca fan who is widely recognized as the best player in the history of Argentina not have more clout than to play only 71 matches for his team?