Former Scotland international Shaun Maloney has retired from football through injury and has joined Celtic as a coach.
The 34 year old was set to sign for Aberdeen this summer, but he flagged up a hernia injury and pulled the plug on the deal.
Maloney made 215 appearances for Celtic, scoring 52 times, and won five league titles, five Scottish Cups and three League Cups in his two stints at Parkhead.
He will now re-join Celtic for a third time, as a development coach with the Under-20s.
Speaking after the announcement, Celtic first team coach John Kennedy said: "I think he'll bring a lot. He's decided himself he wants to stop playing and move into the coaching side.
"The manager and the club had a chat with him and decided they were happy to bring him on board.
"He's a guy who brings a wealth of experience in terms of starting at the club as a young player and moving into the first team and being very successful.
"He's a model professional, a player our first team players will look up to, never mind our young players.
"When he does things he does things properly. He'll bring a lot to the table."