I've been pretty pumped about this guy for a while now. He played really well in his call-up last year, and while I don't think that he can sustain the kind of production that he showed in those 11 games, his spring training this year and fairly consistent play throughout his career leads me to believe he can be a very effective player for us.
I'm thinking something like .275+ AVG with 15 - 20 HR, 75 - 85 R and 15-20 SB (I don't think his 30 SBs last year are an indication of his baserunning ability...he can swipe some but he isn't an elite speedster.)
Mostly I've been impressed with the way he's been handling the 2nd batter role. He's very responsible in the field and his hitting is a plus for the SS position. I don't think he's an all-star or superstar caliber SS but he can be a valuable player for us I think.