Kevin Rudd sent Simon Crean a text message on Thursday morning telling him not to take any public action on the leadership issue, the Courier Mail has reported.
The message, sent at 9.20am, asked Mr Crean to talk to him before making any public statement.
"Gidday Simon. I'm told you saw the PM last night. If that's so and if it in anyway touches the leadership, and if you are making any public comments, please give me a call beforehand. My position is as before. All the best. Kevin," the text read.
After receiving no reply, Mr Rudd made a call to Mr Crean's office that went unanswered.
According to the newspaper, Mr Rudd discussed leadership issues with Mr Crean on Monday and Tuesday but told him he would not support his bid for deputy leader.
Mr Rudd reportedly was in favour of Anthony Albanese serving as deputy instead.
Meanwhile, Mr Crean has said Mr Rudd's camp had supported his decision to call for a leadership spill, the Sydney Morning Herald reports.
"He reneged on our deal, it was gutless," Mr Crean said.
"At no stage did they say to me that Rudd wouldn't run if he didn't have the numbers."
Four Labor frontbenchers have resigned after Thursday's botched leadership coup, all supporters of Mr Rudd.
Mr Rudd refused to stand up as a challenger to Ms Gillard after she called the spill shortly after Mr Crean's press conference.
Mr Rudd has said he would be more than happy to campaign in Queensland alongside the prime minister if he were asked.
Author: Nick Pearson.