#1 Jose Mourinho (Porto and Inter Milan)
There are many reasons why Jose Mourinho is called 'The Special One' and having a strong European history is just of them.
A Porto side managed by Jose Mourinho won the 2003-04 Champions League by beating Porto 3-0 in the final. This was Porto's first European glory since winning the 1986-87 edition of the European Cup.
Mourinho joined the list of managers winning the UCL with two different clubs in 2010 when his Inter Milan side won 2009-10 edition of UEFA Champions League, beating Bayern Munich in the final by a scoreline of 2-0. On the same day, he also joined the elite list of managers winning the treble as his Inter side had also clinched the Serie A and Coppa Italia titles before the lifting the UCL trophy.
Under Jose Mourinho, Inter also became the first Italian club to achieve the treble and the sixth European club to do so.