By Tom Victor Roy Keane believes Arsenal will have received encouragement in their title push after demonstrating they’re a match for Manchester City, adding that their scrappy wins are a good sign, but fellow pundit Jamie Carragher still feels the goalkeeper situation could prove their undoing. Arsenal moved six points clear of their rivals after this week’s Premier League fixtures. The Gunners survived some shaky moments from keeper Davd Raya to beat Luton in a seven-goal thriller, with City falling to a 1-0 defeat at Aston Villa the following day. The results mean the teams are separated by…