Millwall chief executive Ken Brown has decided to leave the club at the end of the season. Brown, who has been in the role for four years, now plans "to pursue other career opportunities".
Deputy executive chairman Heather Rabbatts said: "Ken has seen the club through difficult times and I wish him well in his future career."
During Brown's time in charge, the club reached the 2004 FA Cup final which saw them qualify for the Uefa Cup.