Not that it would happen, but I can imagine providing the scenario in the following link as a law school exam: Larry Bird mural
It does not appear headed towards legal action, but hypothetically, how could this go? On the copyright front, is it a fair use? A derivative work? Does adding tattoos that Bird obviously does not have change the copyright analysis?
On the Right of Publicity front, or perhaps on the privacy front, what issues exist? Is it a commercial use? Is it protected by statute? Are there issues involved here that sway the analysis in one direction or the other?
Article in the New York Times examining the issues presented by depicting athletes in video games, and the possibility that the tattoo artist retains an interest in their work (original work of authorship fixed in a tangible medium of expression). Thus, a human, or skin, is now a tangible medium of expression.
Seems like a simple agreement at the point of origin would fix most of these issues going forward.
Link to the New York Times article: NYT article on who owns what athlete tattoos and video games