Doc Rivers is still undecided if he's going to return to the Boston Celtics bench next season and Thursday came word from Marc Stein and Ramona Shelburne that he and the Los Angeles Clippers have "strong mutual interest" in each other. Until we hear from Rivers the rumors are going to keep coming and Friday's Boston Herald reports Vinny Del Negro could be an option if Rivers resigns. Mark Murphy writes: "Two league sources with direct knowledge of the situation confirmed yesterday that if Rivers does indeed leave, former Clippers coach Vinnie Del Negro will receive serious consideration as his replacement." According to Murphy, Celtics president of basketball operations Danny Ainge is "an admirer of Del Negro and his up-tempo philosophy." Rivers reportedly doesn't want go through another rebuild and Ainge may take that course this summer. If Rivers leaves he'll forfeit a guaranteed $21 million on the table, however he will get most of that back should he move over to the Clippers. Rivers and Ainge may not come together on a decision until after the June 27 NBA draft. "As a stopgap for that situation, sure," said one source. "Vinnie would be the perfect person for what they need. All of the all-star coaches, or whatever you want to call them, are going, and knowing how Danny feels about him, (Del Negro) would be a good fit."