Former Celtic and Scotland captain Scott Brown has announced his retirement.
The 36-year-old has represented Aberdeen this season as a player-coach but left after manager Stephen Glass was sacked in February.
He won 22 domestic titles with Celtic, including 10 league titles, and played 55 times for Scotland.
Midfielder Brown announced on social media “it’s with a heavy heart that I hang up my cleats”.
He added: “To all the fans who supported me from the terraces, thank you.
“As someone once said, football without fans is nothing and I’ve been proud to represent you on the pitch. I hope I can say goodbye to everyone who has supported me over the years.
“I’m excited about the next step in my career, focusing entirely on becoming a manager as I transition from the pitch to the dugout.”
Brown left Celtic last season after their bid for 10 consecutive titles ended in failure. He had spent 14 years with Celtic during one of the club’s most successful periods.
He was a key part of the side which won four consecutive domestic trebles and nine consecutive league titles, having also lifted a League Cup with his debut club Hibernian.
His Easter Road displays convinced Celtic to pay Hibs over £4 million for his services in 2007, which was a record transfer fee between two Scottish clubs.
Brown joined Aberdeen last summer as he sought to transition into management and was interviewed for the St Mirren job after Jim Goodwin left for Pittodrie.
