 Complete the following phrase:  On 2 November, against Aston Villa, Mason stuck his head in the chest of opponent Christian Benteke, who reacted by striking him with his hand. Referee Neil Swarbrick sent off Benteke but took no action against Mason. The incident led to both clubs being fined 20,000 by The Football Association FA for failing to keep their players under control. In January 2015, Mason was awarded a five-and-a-half-year contract, keeping him at the club until 2020. He started in the 