Let's have a look at a hypothetical.
Crabtree/agent refuses to sign with the 49ers for a single nickel less than what Heyward-Bay gets.
Crabtree/agent thinks he's worth at least a top 5 pick.
Crabtree/agent re-enters 2010 draft.
Crabtree is drafted outside of the top 10 due to the better talent in the 2010 draft and questions about his motivation or personality.
Who's to say he's not going to try and pull another holdout for more money?
Stay away from the kid.