Schlupp, 32 years old, has a transfer price of 6 million euros. He is 178cm tall. He is a midfielder and a left-footed player. In the first half of this season, the player represented Crystal Palace 16 times, all of which were substitute appearances.

Schlupp said: "I am really happy to join Celtic, a team that is very influential and iconic in football. I have already spoken to the manager and I am very much looking forward to working with him. Working hard with the boys in the team to bring more trophies to our supporters.”

“The team has performed well both domestically and in Europe this season and I know I’m joining a very successful team but I hope to contribute and help us achieve more.”

“I can’t wait to get started, put on that famous green and white jersey, meet the fans and give it my all to bring us more great times.”