forgive my bias:
you're really just turning Utley into Lester in my humble opinion. Jeter is getting old, how much longer can he keep this up? another 2 years, idk? franklin gutierrez is young and up-and-coming, but is he there yet? Bartlett is still hitting & running. Lilly is isn't in the same conversation with others, he's just bad.
i think I hold out and wait for a little better offer than this. Utley, even with expiring contract should land you a 5-6 round player. Lester is a little outside that, though if he pitches like he has in his last 4 starts maybe i'll be wrong.
i like bartlett over jeter for the future
i like lester over lilly
i like utley for this year over gutierrez for the future
stay put for now, but don't stop looking for options to sell expiring contracts