According to the Wide World of Sports, Seibold is set to walk out on Souths to join the Broncos.

Wayne Bennett is contracted to coach Brisbane in 2019 but his future at Red Hill remains shakey.

David Furner, who has served as Seibold's assistant at Redfern, is expected to take the reins at the Rabbitohs if the head coach leaves.

Furner has already been appointed to coach Leeds in the English Super League next year, but it is believed he has a get-out clause in his contract.

It has been reported that the Bunnies have given Seibold a week to decider whether he will extend his contract at the club beyond the end of next year, but he has been tipped to decline.

This would see Souths move him on and install former Canberra coach Furner for 2019.