The good news is the Cards only gave Warner half of the signing bonus. As part of his new contract last year, he agreed to defer half the signing bonus until spring 2010.
So, if Warner retires, he does not have to give anything back and the Cards do not have to go after "it" at all. They just agree to not pay the 2010 deferred part.
If Warner thinks that is not fair, then he will have to pursue the issue.
I think both parties were concerned about Warner retiring and planned the contract accordingly.
Not according to Darren Urban.