Domestic success is not enough for Manchester United however .
While the charismatic German has not won a trophy on a continental stage , his Dortmund side stole the show in the Champions League last season with their fast attacking football capturing the public 's imagination .
Domestic success is not enough for Manchester United however , and while the charismatic German has not won a trophy on a continental stage , his Dortmund side stole the show in the Champions League last season with their fast attacking football capturing the public 's imagination .