Neil Lennon says he would never rule out returning to Celtic for a fourth spell but admits Ange Postecoglou has done a spectacular job since succeeding him.
The former skipper also had two stints as manager and led the club to a quadruple Treble in 2020 before exiting the following February with the title defence in tatters.
Lennon has since managed Omonia Nicosia but has watched with admiration the job his successor has carried out.