Unai Emery has achieved the very rare feat of completely transforming his reputation as a manager. A lot of gaffers do get cast aside after one failure, and it seemed as though Emery was heading in that direction after he left Arsenal. The Spaniard was seen as something of a joke figure in the Premier League after his departure from the Emirates, but now everyone is reconsidering their view on Emery after a fantastic 12 months at Aston Villa. Speaking on Off The Ball, Paul Merson has been discussing Unai Emery’s recent resurgence, and he says that the Spaniard has now proven to everyone that h…