manchester united have six ex-players in champions league semi-finals .
javier hernandez scored the winner for real madrid against atletico madrid .
paul pogba , carlos tevez and patrice evra play for italian side juventus .
cristiano ronaldo set up hernandez 's goal for real madrid on wednesday .
barcelona 's gerard pique helped keep out paris saint-germain .
hernandez was the hero for madrid but he will need to find a new home .