Roberto Martinez has explained how he thinks Kevin De Bruyne has changed football. READ MORE: Who is Kevin De Bruyne? Get to know Man City’s £54.5m assist kingThe now-Portugal manager had the pleasure of working with Kevin De Bruyne for years when he was managing Belgium. As a result, not many are perhaps better equipped than the former Everton boss to detail how the £54.5 million man operates on a football pitch. Roberto Martinez explains how Kevin De Bruyne “transformed” footballThe Spaniard managed the Belgian national team for six years. As a result, the 50-year-old has also had the opport…