"But other than that, you have to believe me, I don't really know."
Shearer expressed concern that Newcastle would struggle on the pitch in the Championship unless the team's off-field problems were swiftly rectified, allowing a new manager to strengthen a squad whose departures have included Michael Owen, Obafemi Martins, Mark Viduka, Habib Beye and Sebastien Bassong.
"Newcastle's squad was thin last season, and when you consider the players who have gone out, that tells a story.
"They need players quickly and it could be a long, hard season if that doesn't happen."
Shearer also paid tribute to another former Newcastle United manager, Sir Bobby Robson, who died last month, and under whom Shearer played at St James' Park for five years.
"Not many people knew the real Bobby Robson, but the people who played under him knew him as a man," he said.
"It was a privilege and an honour. He had a great knack of getting the best out of all players irrespective of their age - a 19-year-old earning a fortune or a 36-year-old at the end of his career.
"I've not known anyone have a bad word for Bobby, and in football there's not many people you can say that about."
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