Josh Elliott after Matt Lauer's job at 'Today?'

February 20, 2013: This file photo released by ABC shows Josh Elliott, on the set of 'Good Morning America' in New York. ABC's top-rated morning show has suffered its second personnel defection in four months, with news anchor Elliott telling the network that he's leaving for a job at NBC Sports. (AP Photo/ABC, Heidi Gutman, File) (AP)

The ABC's "Good Morning America" anchors (L to R) Robin Roberts, Sam Chapman, Josh Elliott, Lara Spencer and George Stephanopoulos, celebrate becoming No. 1 ranking in the week of April 9th in New York in this April 19, 2012 handout photo. REUTERS/Fred Lee/ABC/Handout

ABC newswoman Robin Roberts (L) makes her final appearance on ABC's "Good Morning America" August 30, 2012 before taking medical leave as she is shown with fellow cast member Josh Elliott in this publicity photograph released to Reuters. REUTERS/Fred Lee/Handout

Matt Lauer had better watch his back — sources told the New York Post ambitious former “GMA” star Josh Elliott is after his job as host of “Today.”

Elliott told ABC News chiefs on Sunday that he would be leaving the popular “Good Morning America” to work for NBC Sports after months of tense contract negotiations.

Page Six reported that Elliott had demanded $8 million to stay at “GMA,” while ABC’s top offer was $4 million.

A well-placed source tells us, “Josh made it clear that if he was going to stay at ‘GMA,’ he wanted $8 million a year, and he wanted George Stephanopoulos’ job now. ABC chiefs made it very clear that this was not going to happen — he would never knock George off the top spot.

“Now Josh is going to NBC Sports,” the source said. “He can’t work for the NBC News division for six months because of the non-compete terms of his ABC contract. But he is still pushing hard , aiming for Matt Lauer or Bob Costas’ job.”

Click here for more from the New York Post.