Marc-Andre Ter Stegen says Celtic Park is "one of the best football stadiums in the world" and revealed he's desperate to sample the white-hot atmosphere again.
The goalkeeper was part of the Barcelona side that emerged with a 2-0 win at Parkhead back in November 2016.
A Lionel Messi double saw Celtic eliminated from European competition but the atmosphere on the night left an impression on the German star.
Ter Stegen is self-isolating with Spain in lockdown and fielded questions from his Twitter followers, one of whom asked for his opinions on Celtic Park.
The Barça star replied: "One of the best football stadiums in the world! I would love to experience it again!"
He's not the only football star who has been blown away by the atmosphere of Celtic Park on a European night.
In 2017 Gianluigi Buffon pointed to the "electric atmosphere" as one of the things he wanted to experience again before retirement.
Zlatan Ibrahimovic said it made him understand why Henrik Larsson stayed for so long and Lionel Messi called it "the best atmosphere in Europe".
