I'm not surprised one bit. The bloke is a mercenary, he doesn't have a loyal bone in his body and i doubt very much he'll be at the Bronco's once his current contract is up. Anyone who believes he solely left Mexico to be back closer to his family are deluding themselves, the money was far too good to pass up just like it will be to whoever is offering the most coin when it comes contract time in a couple years.
Demetriou will be creaming in his pants when he reads about this and you can rest assured he'll be throwing bucket loads of cash to get him to defect and i wouldn't be one bit surprised if he does. That is of course if Union doesn't offer him more.