Former boxing star George Groves is worried about Tyson Fury and thinks the 35-year-old ‘may never fight again’. Fury recently withdrew from his blockbuster bout with Oleksandr Usyk, with that fight now set to happen on May 18. The showdown between the duo was pushed back because of a cut Fury sustained in training. The Briton took to social media to show off gruesome images of the injury, silencing some of his critics in the process. Fury has outlined his desire to keep fighting, admitting he’s eyeing two bouts with Usyk as well as future battles with Anthony Joshua and Francis Ngannou. Yet G…