It was Paulo Maldini.
The longest serving manager in the English premier league is Sir Alex Ferguson. Next is Arsene Wenger. But the longest serving ENGLISH manager in the premier league is Steve Bruce, who ranks third overall. ref. http://en.wikipedia.org/wiki/List_of_English_Football_League_managers_by_date_of_appointment
steve g liverpool
Ryan giggs david James sol Campbell Gary speed
The longest serving managers are Alex Ferguson, Arsene Wenger , David Moyes, Rafael Benitz and Sam Allardyce.
Sheppard of Ipswich