The match is now due to take place at Ewood Park on Tuesday March 1st (kick-off 7.45pm).
However, supporters are advised that there is also provision to play the game on Saturday January 30th (kick-off 3pm), but only in the event that both clubs are not involved in an Emirates FA Cup fourth round tie or Championship fixture on that date.
The game against the league leaders was originally scheduled to be played on Boxing Day, but was postponed because of a waterlogged pitch at Ewood Park.
Initially, the two clubs agreed that the game would be rearranged for Tuesday February 16th, with the new date being publicised by The Football League and both clubs.
However, following further discussions between the League and the two clubs, a new date has been agreed that will assist the League with its wider fixture scheduling requirements.
The Football League wishes to apologise to supporters of Blackburn Rovers and Middlesbrough for any inconvenience this further change might cause and would like to thank the two clubs for their understanding in the circumstances.