He is currently a blocked prospect according to MLBTR - http://www.mlbtraderumors.com/2008/03/blocked-prosp-2.html
Lillibridge would be nice to acquire at the deadline, or in the offseason to fill the SS spot. If we can cut Cabrera lose, and Uribe is gone, Lillibridge could take over SS, and Ramirez can play 2B. That would be a pretty nice young infield of Fields, Lillibridge, and Ramirez (not Paulie). Lillibridge put up a .400 OBP in 2006, and in 309 Minor league games, he stole 105 bags, and had an 85% steal rate.
Not sure what the price would be on Lillibridge, but if Escobar continues to play well, it will only help.