Billy Brown will leave Hibernian when his contract as assistant manager expires on Saturday.
News of his departure brings to an end a 10-month spell at the Edinburgh club.
Brown arrived at Easter Road last September and briefly took over as caretaker boss before Pat Fenlon was appointed as Colin Calderwood's replacement. He then resumed his role as number two during Fenlon's first season at the helm.
A Hibs statement read: "Hibernian today confirmed that Billy Brown will be leaving the club when his contract expires on 30 June 2012.
"Brown was appointed assistant manager in September 2011 and during his time at Easter Road was briefly placed in temporary charge of first team affairs in November as caretaker boss.
"The club would like to thank Billy for the effort, knowledge and commitment he gave during his time at Hibernian and wishes him every success in the future."
Fenlon said: "I'd like to thank Billy for the contribution he's made since I've been at the club. His experience and knowledge of Scottish football is second to none and I was delighted that he agreed to stay on when Liam [O`Brien] and I first came into the club.
"With the reputation that Billy has I'm sure he'll be back in football before too long."
Hibs have also confirmed that director Fife Hyland has now formally left the club, after announcing in April his plans to leave at the end of the season.
Chairman Rod Petrie said: "I should like to thank Fife for the experience, flair and acumen that he brought to the club. We wish him well for the future."