I am looking for literature that focuses on the credibility loss of an athlete when he endorses a product of a company by which he/she is sponsored/branded.
A former colleague of mine told me about a athlete branding strategy that was developed during his time at Chicago Booth School of Business. For the former NBA player Yao Ming. Which we thought back then, was the first such strategy to attempt the branding of an athlete.
To learn more I would contact Prof. John Huizinga at Chicago Booth. Professor Huizinga, as he was Yao Ming's former Agent.