Shearer could become Keegan’s number two at Newcastle.
“If he were to ring me and ask to speak to me, I would certainly speak to him; I’d be foolish not to,” he said.
“I was never really a serious possibility [for the manager’s job] because they were looking for experience.”
He added: “I haven’t really seen myself as a number two.”
He continued: “It remains an ambition to manage it some day – when that will be I don’t know.
“I hope and pray that he [Keegan] does well because I’m a fan at the end of the day.
“The place will be rocking.
“The fans have what they want. They want entertainment, passion and commitment, and they haven’t seen it of late.
“They will go forward and score goals and I’m sure they will concede a few.
“I was surprised [by the appointment] but Newcastle have that power in his [Keegan’s] heart. He wants to do so well for them.”