Arsenal legend Gilberto Silva has fired a warning at Mikel Arteta if the Gunners fail to win the Premier League this season. The north London giants find themselves in a battle for the title alongside Manchester City, who after winning on Saturday currently sit top of the Premier League with Arsenal due to face United later today at Old Trafford. One slip up in the final two games from Arsenal would realistically concede the title to Pep Guardiola’s side, such is the quality Arteta has to compete against if he is to end the Gunners’ 20-year wait for a Premier League title. Yet despite this, Gi…