article_snippet: The pair worked together under Louis van Gaal at Barcelona in the late 1990s and retain a close relationship to this day. '
article_snippet: When I was with Jose the assistant of Van Gaal in Barcelona in '98 and '99, it was a long time ago
article_snippet: Chelsea (second from left) and Ronald Koeman (far right) worked together at Barcelona during the 1990s .
article_snippet: Louis van Gaal at Barcelona was manager of Barca during this time .
highlights_snippet: The pair worked together at Barcelona during the late 1990s .
  