The only way I personally would trade is if I was in a Keeper League and I was one of the bottom of three or four teams in the standings. I would definitely trade the players you mentioned for Chase Utley and bring him on in next season as my starting 2'nd...
In any case, the person that is trading Utley should be in decent enough position to win their respective league this season.
Managers in Keeper leagues, this is your chance to BUY REAL LOW on Chase Utley for next season! Send your Brandon Phillips, Robinson Cano, Brian Roberts, Chone Figgins, and Dan Uggla PACKING!
You will be glad you did this next season!