City Stars chairman Peter Jabuya, told Capital Sport the Briton has accepted the offer to take charge of the side on voluntary basis and will be in charge until the end of the first leg in June.
The Kawangware based club has retained Joseph Jagero as the assistant.
“We have been in talks with Bryett who is in the country after the sudden departure of Ndubuisi. He has agreed to lead the club on voluntary terms since we are facing financial constraints.
“He is on the ground and it’s upon him to decide whether he will be on the technical bench on Wednesday when we host Chemelil Sugar,” Jabuya confirmed.
“He will handle the team for the first three months then he will decide if he will extend stay since his visa expires in June,” he added.
The chairman explained they had decided to mutually end their relationship with Ndubuisi due to the cash crunch.
“He is a very good coach and we really did not want to let him go but since I did not want his arrears to accumulate, I had to take the difficult decision to release him.
“I want to thank him for leading our team well since he took over at the beginning of the season and I wish him all the best in his coaching career,” he told.
“For a very long time, we have been running the club on SuperSport and KPL funds which are not enough. I have not paid players March salaries and it lowers their morale because they have bills to settle but we have motivated them and they are ready to take on any team,” Jabuya went on.
Bryett who has worked in Brazil, England and other African countries is a UEFA B License holder specialising in tactical, technical and fitness coaching.
Ndubuisi who beat Sofapaka 2-1 in his last assignment, was appointed at the start of the season and has won two matches, drawn three and lost twice as City Stars sit 10th in the KPL log.
He left the club two days before City Stars invite Chemelil in a mid-week fixture at Nairobi’s World Hope Center.