Giants' executives are insisting the contract they offered to Barry Bonds on Dec. 7 includes a proviso that would bar trainers, personal assistants, friends and other members of his entourage from the locker room at San Francisco's AT&T Park and other team facilities. "The posse rule is the real sticking point in the Bonds deal," a baseball source familiar with the talks said. "Bonds doesn't see why anything needs to be different than in the past, or different from any other players." Asked to comment on the ongoing talks, Bonds' agent Jeff Borris said last night that he would not characterize them other than to say, "Both the Giants and I are working very diligently on the language of Barry's contract." Giants officials and Borris are also negotiating over language that would allow the team to withhold Bonds' pay if he missed games because of court appearances, according to sources.