Celtic have added to their midfield options by signing German international prospect Mika Baur from Paderborn, according to BBC News.
The 22-year-old has put pen to paper on a four-year deal at Parkhead, with the transfer fee not disclosed by either club.
Baur becomes the latest addition to Brendan Rodgers' squad as Celtic continue to strengthen ahead of another season balancing domestic dominance with European ambitions. Full details of his squad number and potential debut have yet to be confirmed.