The former Leicester assistant coach confirmed the news to TNT Sports before his side’s Prem Rugby Cup clash against the Tigers at Welford Road.
“I am not there next season, but I wish the club well with whoever comes in and I sincerely mean that,” he said.
“I want to be professional. There is a job to finish here.
“It was an honour to be asked to be the interim head coach of Newcastle Red Bulls. I have enjoyed the people, I have enjoyed the place and I wish them well in the future.
“In terms of the players, I want the best for those who are staying and moving on. I want them to find jobs in the country or wherever so they can continue their professional careers.”
He would not, however, be drawn on rumours of his successor.
“That is news to me [about Gregor Townsend]. I am sure he covered that off in his press conference this week,” said Dickens.
“The job he has is a consultant to Red Bull, and that is what he does.”
