'A lot to improve going forwards' - Arsenal goalkeeper David Raya delivers honest verdict after Noni Madueke and Viktor Gyokeres seal 2-1 win at Slavia Prague

Arsenal goalkeeper David Raya has admitted his side must sharpen up their second-half display despite holding on for a 2-1 Champions League victory away at Slavia Prague on Wednesday night. First-half strikes from Noni Madueke and Viktor Gyokeres put the Gunners in control before the Czech hosts mounted a late fightback at the Fortuna Arena.