Wes I'm about 90% sure Geno's "authorized biographer" thing is a joke. There is no authorized biography for Malkin AFAIK. Christ the guy is not even 30 years old!
Little early for that yet? Let's wait until his career is over at least before assuming a biography is in the works (and what publisher would carry it at this point in time? Books are VERY expensive to print and distribute).
Unless I missed it (someone point me to the Amazon link with Rossi's name on the cover, if I did).
I would bet dollars to doughnuts that "title" is Rossi's idea and has no legal backing at all.
Rossi asked him if it would be OK to use it, and Geno, probably not fully understanding what was being asked / what the implication of that title is, said "sure OK Rossi". In 10 years if there's a book with Rossi's name on it, I'll apologize. Until then it's the author equivalent of vaporware. Sounds good, doesn't mean much in practice.