That being said, Moo is still a player with uses. He's a left-handed hitter who makes good contact. Despite not having the power to be a prototypical corner outfielder he's above average defensively there. The main concern should be the fact he turns 33 in August. With his lack of secondary skills (power, OBP) it could be a fast, precipitous fall for Pierre. Combining his age with his personality complex (Spanish first name, French last name) would cause me to shy away from acquiring him.
I don't know where the Sox plan on playing Pierre this season but a LF platoon with Andruw Jones would make the most sense while playing Rios in CF and Quentin in RF. This could be a decent outfield but I wouldn't bet on it.