I'd lay -3000 that this rumor is full of hot air.
No one wants to trade up. There are no can't miss prospects. It's not a big drop from Stafford to Sanchez, not a big drop from Curry to any of the other DL's, and not a big drop for any of the OTs.
Only way Detroit trades down is if they scrap the "draft value" sheet.
I will agree with this, and I told the person that told me. You're Full of Sh*t. Would be a Dumb move if it was true.