Aston Villa are interested in signing one Arsenal player in the summer transfer window – but their chances of getting a deal done may hinge on one factor in particular. Unai Emery is now preparing his squad for Champions League football after Villa enjoyed an incredible campaign in the Premier League, finishing fourth in the table and boasting wins over the Gunners and Manchester City. Unsurprisingly, it appears that Villa are looking to bolster their ranks before next year. Aston Villa are closing in on a deal to sign Ross Barkley. And it seems that they are also admirers of another attacking…