Arsenal face an anxious wait to learn the extent of Riccardo Calafiori’s injury following their win over Shakhtar Donetsk. The Gunners returned to winning ways after losing to Bournemouth however, the performance was far from convincing at the Emirates. Mikel Arteta’s side earned three points in the Champions League thanks to a Dmytro Riznyk own goal, with the Shakhtar goalkeeper also making the headlines for saving Leandro Trossard’s penalty. In what was a rather uneventful night for Arsenal in North London, one of the main talking points was the fitness of Riccardo Calafiori. READ MORE: Five…