Shaun Maloney has returned to Celtic as a coach, with injury bringing his playing career to an end.
The Scotland international, 34, was pursued by Aberdeen this summer and offered a new one-year deal by Hull, where he played 14 games last season.
However, a potential move to Pittodrie was derailed when the player flagged up hernia trouble.
Maloney, who had two previous spells at Celtic, will be a development coach with the Scottish champions' under-20s.
He made 215 appearances for Celtic, scoring 52 goals, winning five league titles, five Scottish Cups and three League Cups.
'Maloney brings a lot to the table'
Capped 47 times for Scotland, Maloney also featured for Aston Villa, Wigan and Chicago Fire.
"I think he'll bring a lot," said Celtic first-team coach John Kennedy. "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."