Rumour Mill: Pep warns Celtic | Souness: “Splash cash” | McCann backs Barton | Gers slam bus vandals

Pep Guardiola warns Celtic that there’s much more to come from Man City, Graeme Souness urges Rangers board to invest, Neil McCann backs Joey Barton in suspension saga and Ibrox club are left “disgusted” by “vile” vandalism of team bus...