I love being right :) hmmm...

http://www.footballnewsnow.com/2011/raiders-michael-bush-may-not-be-unrestricted-after-all/

Read the link that agrees in saying that MB could possibly be restricted after all due to being hurt his rookie season. And in this case the raiders could sign him and miller for low numbers to fit under the cap this year, but higher numbers and more years, so that they fit under the cap every year.