No one has. not as far as i can tell anyway. Paul ince played in London Manchester Liverpool and milan derbies but not Glasgow. Craig bellamy played in Manchester, Liverpool London and Glasgow derbies. Andrei Kanchelskis played in Glasgow, Liverpool, and Manchester. Robbie Keane has played in London,Liverpool,milan,and Glasgow but not in Manchester. Patrick Viera has played in London, Milan, and Manchester derbies. As far as i can tell no one has yet.
Craig Bellamy has played for West Ham, Liverpool, Manchester City and Celtic and has been involved in their respective derbies.
Ray Wilkins - Chelsea, Rangers and Man Utd
Which four players have played in a Manchester derby mersey derby and a Glasgow derby
I think nobody
The Manchester derby would be between Manchester United and Manchester City. The Milan derby would be between AC Milan and Inter Milan. The Glasgow derby would be between Celtic and Rangers There are 5-6 London teams in the English Premier League at any one time so lots of different derbies.
Man utd is the best