I'm no business expert but I'm assuming (hoping) the lack of comment re Vaughan may be related to these other interested parties. If there are others who are genuinely interested in buying the club then it's in SC's best interest to keep his cards close to his chest. If he comes out and says "I'd never have this two-bit, money-laundering, tax-defrauding, drug-dealer-associating, incompetent scouse bellend anywhere near this club" then it gives a negotiating advantage to anyone else who thinks they're "competing" with Vaughan & co.
*the above description is mostly allegedly obviously. Apart from the bellend bit, that seems a safe bet.