Cologne have signed teenage centre back Akwo Arrey-Mbi on loan from Bayern Munich, the clubs said ahead of Monday’s Bundesliga transfer deadline. The 18-year-old Germany youth international Arrey-Mbi has extended his Bayern contract to 2025 but will be with Cologne until 2023. “I am looking forward to my new challenge in Cologne,” said Arrey-Mbi. “The club have shown me a path in which I believe in and feels right for me. Therefore, I wanted to take that opportunity.” The Cameroon-born Arrey-Mbi previously played for Norwich City and Chelsea, among others, in England before moving to Bayern in…