Jack Grealish has now given an insight into what he does behind the scenes he suffers an injury. READ MORE: Jack Grealish says there’s something really important the Man City players always ‘talk about’Perhaps the toughest part of a player’s career is injuries. For starters, to even suffer the pain of an injury is a challenge. To add to that, footballers are forced not to participate in an activity that has dictated their everyday living since they were children. In addition, watching their teammates train and play games must be difficult to tune into. However, that is the name of the game. Ja…