Celtic sign German winger Kuhn from Rapid Vienna

Britain’s Francesca Jones has to be helped to walk off court after retiring from Australian Open qualifying, while Emma Raducanu practises in Melbourne.

Erling Haaland delivers an emphatic and ominous warning to Manchester City’s rivals after scoring five goals in their 6-2 win at Luton in the FA Cup.

Preview followed by live coverage of Wednesday’s Champions League game between Napoli and Barcelona.