How about the Chiefs swap their 1st round pick (3rd overall) to the Cardinals for their 1st round pick (31st overall) and Boldin.

The Chiefs get a legitimate #1WR to pair with Bowe and TG, and the Cardinals get to draft their LT of the future.

The Chiefs can then use their late 1st rounder on Duke Robinson or Alex Mack to solidify the line, and the 2nd on Loadholt for the RT position.