Unai Emery could sign an ‘exceptional’ player to upgrade on a ‘popular’ Aston Villa duo this summer. Aston Villa‘s primary focus currently is departures, with an injection of cash needed to ensure compliance with Premier League PSR ahead of the June 30th deadline. Once that date has passed Unai Emery and president of footballing operations Monchi can focus on what players they can bring in to get the squad ready for the Champions League. Emery is a meticulous planner and will already know the areas of his side that need strengthening this summer, with full-back high on the list. The Spanish ma…