Unai Emery could finally get the opportunity to sign one of his long-term transfer targets at Aston Villa this summer as Barcelona confirm he will depart the club. Aston Villa have had a busy summer, with Unai Emery overseeing a number of arrivals and departures at Villa Park. The sales of Tim Iroegbunam, Omari Kellyman and Douglas Luiz were all necessary for Villa to comply with Premier League spending rules early in June, whilst the £60 million Saudi offer for Moussa Diaby proved too good to turn down. Emery wants Villa to make an impact as they compete in the Champions League this season an…