Since leaving the Nine Network in 2017 because of a pay dispute over her position on the Today Show, Lisa has moved on to join the panel of Channel Ten's The Project.
In a recent interview with an Australian publication, the mother-of-three made a pointed comment which proved she's not up for sharing her seat with anyone, least of all her former colleague Karl.
"I think we're full at the inn at the moment," she said.
"He might have to take a number."
WATCH "All the times Karl Stefanovic was a complete animal"
Lisa also took aim at Karl during a chat with the Herald Sun, in which she noted it was "difficult working with big egos" and praised the "integrity" of her new colleagues at Ten.
Since leaving the Today show last year after a rumoured sacking when his personal life began to affect ratings, Karl, 44, has worked out his contract with the Nine Network, and the new season of This Time Next Year is due to air soon.