Unai Emery can now sign a defender compared to Sergio Ramos for free this summer – with Aston Villa leading the race. The Villans look set to make a return to the UEFA Champions League next season as Tottenham fail to take advantage of their games in hand – as a result, the squad will need to be strengthened even more. Aston Villa have shown real ambition in splashing £51.9m on Moussa Diaby and £35m on Pau Torres. Now – however – there is a top player Unai Emery can bring to Aston Villa for nothing this summer… Aston Villa can sign Mario Hermoso for freeWell – according to Calciomercato – Asto…