First of all "contender" is a slippery term. You can make the case during the off season that at least 15 teams are "contenders" given that each year there is usually at least one team that surprises the "experts" and contends into September.
Secondly, if a team is a strong contender, doesn't that usually mean that they have a high caliber Catcher, so why would they be interested in AJ?
This just in from the newswires: The Anti-Trust Division of the US Department of Justice has announced that whenever Sale take The Bump, it is unfair competition in violation of various federal and state laws. However, he is not being prosecuted because it is so ****in awesome to watch him do his craft.