Former Dutch-based manager, Sunday Oliseh, has made his choice on which football manager is currently the best. Many football lovers could easily pick Manchester City boss, Pep Guardiola as the best manager in the world, but according to Oliseh, Aston Villa boss, Unai Emery occupies that position. This was after the Spaniard guided Villa to the semifinal of a European competition for the first time since 1982. Aston Villa beat French Ligue 1 giants, Lille, in a penalty shootout at the Stade Pierre-Mauroy on Thursday to advance to the last four of the UEFA Europa Conference League where they wi…