Steve Bruce’s side’s winless start to the campaign means they sit 17th in the table with just three points from six matches.
Supporters are chanting for Bruce, who has won just seven of his previous 34 games, to vacate his head coach position.
Agbonlahor, who has regularly came out in support of his former boss, believes Bruce is best man for the job.
He told talkSPORT: “I still think there is no other manager who could get better out of those players for Newcastle.
"I’m with Steve Bruce. Last week against Leeds, they really put in a challenge. It was a team fighting and playing for their manager.
"Once you see a team is playing and working hard for their manager and listening to their manager, then I’ve got faith in him.
"I think Newcastle will be fine.”
We’ve gathered the best of today’s Premier League speculation below…
5. Hammers in McKennie talks
West Ham United have initiated discussions with Juventus over the possibility of signing USMNT midfielder Weston McKennie. (Football Insider) (Photo by JONATHAN NACKSTRAND/AFP via Getty Images) Photo: JONATHAN NACKSTRAND
6. Everton plot January raids
Everton will be looking to sign one of two players in the upcoming January window. (Fabrizio Romano) (Photo by Alex Livesey/Getty Images) Photo: Alex Livesey
7. Ramsey prefers Everton
Juventus misfit Aaron Ramsey could be on his way back to the Premier League with Everton his preferred destination ahead of West Ham and Newcastle United. (TuttoJuve) (Photo by Marco Luzzani/Getty Images) Photo: Marco Luzzani
8. Phillips in talks for new deal
Leeds United are ready to open talks over a new deal for star midfielder Kalvin Phillips – and the midfielder is willing to sign as long as he is given a contract to match some of Elland Road's top earners. (90min) (Photo by Stu Forster/Getty Images) Photo: Stu Forster