John Mikel Obi has discussed the rift between him and Chelsea forward, Nicolas Jackson, DAILY POST reports. Mikel openly criticised Jackson following the Blues 2-0 opening day defeat to Pep Guardiola’s Manchester City. Jackson had a goal ruled out for offside in the encounter and missed two good scoring opportunities. Mikel said after the game that Chelsea need a striker who can shoot the ball. Jackson responded by scoring in the West London club 7-2 hammering of Southampton the following week and took to the social media to tell Mikel “to shut up”. The Senegalese also hit the target in Chelse…