It's in the box set special feature.


You make a valid point the only problem I have is how does Fabrizio know that it's Barzini that wants him dead? and how does he get in touch with Barzini?

Throughout the films, Mike and the Corleone family only seem to tell people what they need to know, nothing more nothing less. So I don't see Mike or anyone else telling Fabrizio that a guy named Barzini is out to get him because etc.... I only see him saying you are here to protect me because someone may be trying to kill me.


About the point about the rat in the family- what if Barzini was getting fed up with Solozzo and wanted to get rid of him. Maybe Barzini felt threatened or that McCluskey and Solozzo were becoming too friendly. Mike does the hit on both of them getting rid of Barzini's problem and Barzini knows where Mike is going.