It's been confirmed that Celtic captain Scott Brown is leaving the club at the end of the season.
The 35-year old is out of contract at Parkhead in the summer, and has signed a pre-contract deal with fellow Scottish Premiership side.
Brown will work as player/coach at Pittodrie under their new boss, Stephen Glass.
The combative midfielder is nearing the end of his fourteenth season at Celtic, where he has hoovered up every domestic honour.
Brown departs with ten league championships, six Scottish Cup medals, and six Scottish League Cup medals.
He was signed by then manager Gordan Strachan in 2007, and has since worked under Tony Mowbray, Ronny Deila, Neil Lennon (twice) and Brendan Rodgers.
“I would also like to thank the great Celtic managers I have had the good fortune to work with," Brown said, "And also so many team-mates and, of course, the Celtic fans who have given me such phenomenal support and backing over the years.
“I have always given my best to the Club and always wanted the best for our fans. We have enjoyed some fantastic moments and success together, dominating the game in Scotland so regularly and enjoying some great European nights.
“It is a huge decision to leave this magnificent club, which has been such a massive part of my life for so long, but this is a new opportunity for me and a new chapter. Celtic will never leave me and the Club will forever be in my heart.
“We still have work to do this season and that will of course, as ever be my full focus as we try to bring our fans more success.”
Outgoing chief executive Peter Lawwell added, "When he chose Celtic over others, we were of course delighted. We knew we were getting one of the country’s finest talents and he in turn a chance to take to the stage and be part of Scotland’s biggest club.
"He took this opportunity with both hands but I don’t think anyone of us would have imagined just how successful he was going to be.
"Ever since signing, he has lived and breathed the Club and our cause - day after day, across a decade and a half, giving his heart and soul to Celtic.
“As every Celtic Manager in the past 15 years will testify, as well as being a hugely talented player, Scott’s effort, his drive, his work ethic and his will to win, are an example to us all.
"He has been a pivotal figure in delivering such a sustained period of dominance for the club and for that, I know every Celtic supporter will be so grateful to him."