Liverpool legend Jurgen Klopp has been pictured donning the infamous black and yellow colours of his former team Borussia Dortmund for the first time since leaving the German outfit in 2015.
The 57-year-old will be managing one of the teams in a farewell match which has been arranged for two of his former players, Lukasz Piszczek and Jakub Blaszczykowski.
Klopp will be in charge of Blaszczykowski's team for the testimonial game.
Ahead of the game this weekend, Klopp was spotted taking part in a training session involving the Dortmund players, bringing along his assistant Peter Krawietz for the meeting.
The 57-year-old will be managing one of the teams in a farewell match which has been arranged for two of his former players, Lukasz Piszczek and Jakub Blaszczykowski
The German appeared in high spirits throughout the session and was pictured enjoying a conversation with former midfielder Nuri Sahin, who is now the German Giants head coach.
Both Piszczek and Blaszczykowski played a major role in Klopp's success at the German club and were a part of Klopp's Bundesliga winning teams in 2011 and 2012.
They also played a significant role in helping Klopp's men reach the 2013 Champions League where they fell short to rivals Bayern Munich.
And when it came to creating the best testimonial ever, they only had one manager in mind to take charge of the game and be present in the dugout.
So they reached out to Klopp and asked him if he would be involved in the exciting game.
Dortmund shared a video on social media to confirm Klopp's participation as a coach for the match.
In a light hearted video, Piszczek told Blaszczykowski that 'we need a coach and I have an idea, we'll call the retired coach.'
Klopp then entered the frame in sunglasses, saying: 'you finally have your farewell game. Oh my god. And you want to train before the game. Are you stupid?'
Speaking about his involvement in the game Klopp and which team he should manage Klopp said that ' I couldn't care less [which team I manage].
'I don't worry about it at all. I do it like I used to, I start thinking about it five minutes beforehand.