There is no doubt that Jose Mourinho is the most successful manager in Chelsea history and for a long time, he was arguably the best coach in all of Europe. Unfortunately, it looks like the Portuguese manager has faded away from top-level European football over the last several years. And he now looks set to make a return to where it all started for him. He now looks set to return to take care of unfinished business at Estadio de Luz. Chelsea legend Jose Mourinho agrees blockbuster returnIncidentally, it was on the back of a defeat to Benfica that Mourinho was sacked as the manager of Fenerbahce.