Wait how is Youk not as good as Lowell? Lowell has one year left on his deal at more money than Youk will make in the next 3-4 years.
2006 Stats
Youk .279/.381/.429/.810
Lowell .284/.339/.475/.814
So pretty much the same average and OPS. Big difference between the two is OBP and SLG. Youk is on base more and Lowell hits for more power. I would rather have Youk who is younger, cheaper, under the Sox control for longer, and makes less outs. Youk is perfect for the #2 spot in the lineup while Lowell is perfect for somewhere between 6-7 in the lineup. Its nice that Lowell hits for more power but he makes a ton of outs and a .339 OBP isn't very good at all. Theres a reason that Youk has more trade value and its because he's more valuable. Hold on to the league min guy and dump the overpaid veterain.