David Unsworth is expected to seek a job in management after parting company with Sheffield United last week.
The former England, Everton, West Ham and Portsmouth defender, who made 40 appearances for the South Yorkshire club, had spent nearly eight months as head of coaching at the Redtooth Academy.
His exit comes only seven weeks after he rejected an invitation to take charge of Kilmarnock.
Speaking after what has been described as an amicable parting of ways, Unsworth said: “I would like to wish David Weir and all the players and staff at Sheffield United my best wishes for the future.
“And the same goes for the passionate Blades fans who support the club through thick and thin.
“They are a fantastic bunch and have always been absolutely brilliant to me.
“I sincerely hope David and the team have a great season and can gain promotion to the Championship.”
Under the terms of the Elite Player Performance Plan, which governs the development of young players in England, United are obliged to appoint a replacement.
Preliminary talks with interested parties are scheduled to begin shortly.
United, who entertain Burton Albion in the Capital One Cup tomorrow, opened the new League One campaign with a win over Notts County on Friday evening.
Unsworth, a member of the squad which seven years ago gained delivered Premier League football to Bramall Lane, said: “My focus now is on finding a fresh challenge where I can be an integral part of a club.
“I’ve been fortunate enough to have played under and worked for some of the finest managers in the game.
“I like to think that I can put the knowledge and experience that I’ve collected from doing so to good use.”