I am confused! So who hires these negotiator / hostage?
The one playin' pinochle, at Clemenza's place, presumably for Michael's safe return was hired by Sollozzo or the Corleones
He was hired by Sollozzo, in an agreement made with the Bocchicchio Family. If Michael was harmed during the meeting, the Corleones would kill the hostage. The Boccicchio would blame Sollozzo for loss of their kinsman, and seek revenge against him.
