According to an AP source..
A person familiar with trade discussions involving McNabb told the Associated Press the Philadelphia Eagles will only consider a deal for the six-time Pro Bowl quarterback if it includes a pick among the top 42 in next month's NFL draft.
Oakland, Buffalo and St. Louis are considered to be most interested in McNabb. Each team has two picks in the top 42.
I think this will damage Donovan's trade value.. Also, why the number 42? Very random.