A round-up of the latest Arsenal news as Mikel Arteta backs one under-fire Gunners star and Paul Merson issues a warning ahead of Sunday’s match against Aston Villa. Paul Merson issues a warning ahead of Arsenal vs Aston VillaHighbury legend Paul Merson has issued a ‘turn the lights off’ warning ahead of the Premier League match between Arsenal and Aston Villa. The Gunners play host to the Villa Park club on Sunday. It is a crucial encounter for both side’s respective targets for the end of the term. A win against Aston Villa will return Arsenal to the top of the Premier League table. But Unai…