Aston Villa fans have been keeping everything crossed as they have been waiting for an update on the fitness of their goalkeeper. Emi Martinez sustained a hamstring injury in the 2-2 draw with Chelsea in the Premier League, with the Argentine substituted at half-time in that game. Second choice stopper Robin Olsen has deputised since and, whilst not at the same level as the World Cup winner he has replaced, the Swedish international did put in a fine display in the defeat to Brighton on Sunday. READ MORE: Aston Villa player ratings v Brighton, Robin Olsen 9/10 and Ollie Watkins one of two 4/10…