Tony Miller will step down as Dons head coach at the end of the season with talismanic stand off Paul Cooke set to take over.
Miller will end his 23-year association with the Dons at the end of the current Championship season due to increasing work commitments.
And Cooke has immediately been installed as Miller’s successor as player-coach.
“It’s been a tough decision but I feel now is the right time to leave,” Miller said.
“One of the key reasons is I wouldn’t be able to do the job to the best of my abilities.
“Anything I’ve done, I’ve always tried to give 100 per cent commitment to and I wouldn’t be able to do this.
“I fully back the club’s decision to appoint Paul and I’ll give him all the help he needs.
“I believe he’ll turn out to be a great coach.”
Cooke is delighted to have been offered the chance to succeed Miller.
He said: “I’m really looking forward to the new challenge and I will do my best to improve the players not only as individuals but as a group.
“A massive thanks to Tony and the backroom staff for helping me in my return to the game.”
Miller has been involved with the Dons for 23 years as player, three-time assistant and two-time head coach.
He will leave the club fresh from the highs of last year which brought the Dons’ first title as part of the league and play-off double.
He said: “Last year was very special to me. Winning the league title for the first time in the Dons’ history and beating Barrow in the play-offs will live with me forever.”
Chief executive Carl Hall said: “Tony has been magnificent for the Dons over the last few years and will leave as the club’s most successful coach.
“He’s also a great friend of mine, we’ve gone through a lot together so it’s going to be very hard not having him around.”