Robert Douglas was part of the team that reached the 2003 UEFA Cup final under the manager from what country?
Robert Douglas (footballer):  Douglas was part of the Celtic side that reached the 2003 UEFA Cup Final, under the management of Martin O'Neill. Martin O'Neill: Martin Hugh Michael O'Neill OBE (born 1 March 1952) is a professional football manager, from Northern Ireland, who is manager of the Republic of Ireland national team.
i don't know