Sunderland still face a few ‘obstacles’ in their pursuit of this 23-year-old, it has been claimed. Sunderland are still waiting to get their first signing of the January transfer window over the line, and their first signing of the Michael Beale era. And Beale could certainly do with some fresh blood in his ranks too, with the 43-year-old having come under extreme pressure after just seven games at the helm. One name who looks like he might be heading to the Stadium of Light is Barnsley’s Callum Styles. The Hungarian international has been closely linked over the past week and it looked like a…