Here's another piece of info if you do sign him; he'll probably dedicate some things to his mother.
That's because the both of them were involved in a car accident in January 2013 and, while he got out miraculously fine, his mother died in that crash. This trauma has understandably left a mark on him. Valencia did a good job making him grow as a player after that, and he's always been grateful to them.
That's also why we had our doubts on his psychological strength two years ago and let Inter sign him. He's grown and improved as a player and as a man since then and overcame his injuries, but he may be a bit emotional or impulsive at times.
That's what the "behavioral reasons" for his exit may refer to. He's not a bad guy though.