Canna did say good bye and spoke about playing at Juve. This from his official site:
“Sono onorato che il Real Madrid mi abbia cercato e mi abbia fortemente voluto. Sono contento a 33 anni di avere una possibilita’ di questo prestigio, una possibilita’ che mi permette di giocare ancora per traguardi di altissimo livello. D’altro canto, pero’, mi dispiace molto lasciare una societa’ altrettanto importante come la Juventus, che mi ha dato tanto, in cui ho vissuto anni fantastici. In questa occasione, ci tengo a mandare un saluto ai tifosi bianconeri, che sono sempre stati splendidi e non mi hanno mai fatto mancare il loro affetto”.
http://fabiocannavaro.it/blogs/news/archive/2006/07/21/6845.aspx
Loosely translated...."I am honored that Real wanted me so badly to play for them. I am happy at 33 years old I have the prestige and possibility to play at this high level. On the other hand, however, I am very sorry to leave a club of such high importance as Juventus, that has given me much and with whom I have spent fantastic years. On this occasion I would like to send my regards to the Juve fans that were always splendid to me and who have never missed giving me their affection." Fabio Cannavaro
So I do think we should cut him some slack. It was purely a professional decision that he made and I believe he left Juve with true regret.
I am truly sorry that he left but he is still Il Capitano degli Azzurri and I want him to lead them again to the European Championship in 2008.