One of Omar Berrada’s first big tasks as Manchester United’s CEO may be to decide on the future of Erik ten Hag at the underperforming Premier League giants. With Richard Arnold gone already and with John Murtough perhaps set to follow him out the door, Sir Jim Ratcliffe’s minority takeover of Manchester United is already sparking a tidal wave of changes behind the scenes at Old Trafford. And not a moment too soon. And with new (co)owners comes new pressure. New expectations and new demands. Ratcliffe and co have barely wasted an opportunity to remind everyone and anyone that INEOS’ underlying…