Jack Grealish sent a six-word message to Mateo Kovacic after Manchester City won the Premier League title. READ MORE: Who is Jack Grealish? Step into the hedonistic world of Man City’s £100m wingerAlongside Jack Grealish, the £150,000-a-week man was on the bench for City in their 3-1 victory against West Ham United. It was a surprise to see the Croatian international benched. After all, Pep Guardiola hailed his display against Tottenham on Tuesday as “unbelievable.” Grealish sends special message to Kovacic after City win the Premier LeagueAfter Manchester City were crowned Premier League cham…