He has posted a fairly lengthy post on Instagram, thanking Celtic for giving him a chance to re-establish himself after a difficult time in Manchester.

Celtic legend Craig Gordon was quick to respond to the post.

Boyata was at Celtic for a unique period in the club’s rich history, as they have dominated the entire of Scottish football for the last three years and the 28-year-old was a big part of that.

Overall, he made 135 appearances and scored a respectable 15 goals but when it came to contract negotiations the two parties were unfortunately unable to reach a fresh agreement.

He has signed a long-term deal with the Bundesliga club and will look to use his experience gained at Celtic to help him adapt to life in Germany.

Neil Lennon, meanwhile, will need to find a way to replace Boyata as Celtic go after yet another treble next season.