You don't pass on young guys who look like future All Stars just because you have younger guys who might look like future All Stars in a few years. Pek could always be traded for "Kevin Martin, Jeremy Lamb, two first-round picks and a second-round pick.".
Pek is the real deal. He was a sure fire lottory pick if he didn't have that overseas contract. For that, he was a lock for 1st pick in the second round (because they could offer him a better deal than rookie scale two years later).
I haven't seen him play enough to have a good opinion. If he is an all star no question you do it, but is he restricted and wouldn't Minnesota just match?