From wrestling-news.com:
Dave Meltzer reported this in his most recent Observer Newsletter and Dixie Carter confirmed it last night in an interview. Recently WWE had contacted Chicago White Sox star AJ Pierzynski to appear at Wrestlemania 22. If the name sounds familiar, that’s the same player that appeared on TNA not too long ago. Anyway he turned down WWE’s offer, as he realized the spot was more to ‘slap TNA in the face’ than wanting Pierzynski himself. And you know Pierzynski wasn’t interested in the money either as he already makes millions from Major League Baseball.