Chelsea has beaten Manchester utd 3 times in a row for the championship title
Alex Stepney, the Man Utd goalkeeper who played in the 1968 European Cup winning team, went to Man Utd from Chelsea for £55,000 in 1966.
Nicolas Anelka has played for both liverpool and chelsea.He has played for chelsea from 2008 to 2012.
Demetre Berbatov, Manchester United.
romeu Samuel Eto'o
No not as far as I remember.
Ashley Cole is a player who has played for both Arsenal as well as Chelsea. So has Anelka
It is either Puskas or Paulo Maldini.