No. Running backs are a dime a dozen.
Just about every team has a good running back. Barber isn't even an everydown 4-quarter guy. Really nice player, but more than replaceable if need be.
Ask the Chiefs if they regret dumping all that money on Larry Johnson. Did the Giants miss Tiki? Who's the "great" running back for New England?
There aren't but one or two RBs worth that kind of money, and Barber sure isn't one of them.