Paul Mitchell was discovered at an address in Birmingham this week at the age of just 32, according to reports.
Advertisement
Described by family as having 'the kindest heart', Mitchell was last seen by friends on Saturday and was described as being his 'happy normal self'.
Advertisement
Mitchell was widely known for being the supporter who punched Grealish during a Birmingham derby.
Grealish was playing for Aston Villa at the time when they faced Birmingham City at St Andrews when Mitchell made his way onto the pitch after just 10 minutes to punch the midfielder, before the now-Manchester City star went on to score the winner.
He was jailed for 14 weeks as a result and was released after serving four.
Speaking about the attack after the game, Grealish said: "I was just unaware at the time.
Advertisement
"I think we had a corner or a throw-in and I was walking into position and I just felt a whack around the side of the face.
Advertisement
"There's rivalry in football but I don't think there is any place for that really."