Gamble is a top 5 CB. I'd try to restructure or extend him WAY before I considered letting him go.
That isn't really true....
Would you say he was a top 5 caliber in 2012 before getting hurt?
Would you say e was top 5 caliber in 2010 when benched?
He has a top 5 caliber year in 2011. Career wise, only one season has he played up to his contract.