Does saying no hurt you?
Dauten says any decent employer will know this puts you in a potential mess.
You need to say you are presently in a good situation and don’t want to ruin it. Then direct the interviewer to your references.
O’Donnell says you should say, “Yes,you can call, but I would prefer an offer in hand before you do.”
I am not sure how that would be greeted, but these guys are the experts.
I would say, “Gosh, maybe you could wait until you interview everyone and choose me, if you do—this could get me in trouble.”