The Special One has used the same 4-2-3-1 formation for the last six years and must modernize if he is going to be a success at Old Trafford.
When asked about his former Madrid mentor, an ex-Jose Mourinho player gave a damning response.
"During our first team meeting at Real Madrid, Jose Mourinho didn't talk much about tactics," he told Goalwhen asked if the Portuguese manager was to blame for Chelsea's capitulation prior to his December sacking. "In tactical terms, you just have to look at how he eliminated Barcelona in the Champions League with Inter in 2010 by playing defensive, counter-attacking football.