One of the hottest commodities on the market, the NSW State of Origin centre had attracted approaches from the likes of Wests Tigers in recent months.
But the 22-year-old has instead opted to stay put in the Hunter, inking a new deal that will keep him there until at least the end of 2027.
"We are delighted Bradman has re-committed to the Knights," football boss Peter Parr said.
"Bradman had a wonderful season in 2023 and at his age there is no doubt he will continue to grow and improve.
"We look forward to Bradman playing a significant role for the club in the coming years."
Going nowhere 😤— Newcastle Knights (@NRLKnights) Bradman's locked in until at least 2027 ⚔�Details - https://t.co/vqodFovmEV#defendthekingdom pic.twitter.com/BTXd8if2hMFebruary 13, 2024
Best had the stand-out year of his career last season, starring for the Knights at left centre on their run to the semi-finals and scoring 13 tries in 25 games.
It prompted NSW selectors to call him up for the third Origin clash at Accor Stadium, where he scored a double on debut for the Blues.
Speculation around Best's contract had lingered in the background, but the Newcastle junior had declared during last year's finals his preference was to stay at the club.