I don't have any quotable sources, but I've read over the years that he can be a difficult teammate. Understandable, really, he puts out a bit of a selfish vibe if you ask me.
As far as him being likeable, that is an opinion, I have never quite been able to warm up to him as a person. He just isn't a guy that you immediately can get behind, like I said, it's an opinion.
The roller coaster comment I made, isn't that pretty self explanatory? Did you not watch the guy in a Brewers uniform? Have you seen the season he just had with the Yankees, in a contract year no less?
I don't want him back, been there done that. He isn't one of our greatest needs, and the money it would cost us, I'd rather put someplace else.