The German team lost the first leg of the quarter-final clash against Monaco 3-2 last week - a match played a day later than scheduled because of a bomb attack on the team bus as it headed for Signal Iduna Park.
MONACO attempt to reach the Champions League semi-finals when they take on Borussia Dortmund.
Uefa said the kick-off had been moved back because of "late team arrival" at Stade Louis II, where Monaco went on to win 3-1 and progressed to the semi-finals.
Dortmund now needed to score three times without reply just to force extra time but they did not manage to get one back until three minutes after the restart, Dembele tormenting Mendy on the right before his cutback was lashed home first-time by Reus. We are 90 minutes away from qualifying.
The semifinalists for the 2016-17 season of the Champions League have been decided.
Nobody expected Monaco - conquerors of Pep Guardiola's Manchester City in the last round - to get this far but they have done it playing a superb brand of football that has yielded 141 goals so far this season.
"We are here to win by two goals".
For Monaco, the result means they reach the last four for the first time since their run to the 2003-04 final and the youth, vibrancy and pace they possess in abundance mean's Leonardo Jardim's men will be a threat to Real Madrid, Juventus or Atletico Madrid. But Dortmund are a great team with great players. We were always looking for the extra goal, that is the way we play, it is in our DNA.
"We're the team that's played the most games in all of Europe", Jardim said.
However, their second-leg preparation was also disrupted with Dortmund saying their bus was held for 20 minutes by local police.
The visitors started slowly, and the task of overturning a first-leg deficit became substantially trickier after conceding two early goals and watching Nuri Sahin's curling free-kick strike a post at the other end. I try to do what I know how to do and for now it's working. "I expect Dortmund to be much stronger, they will have overcome to some extent the events of the first leg". Monaco was stretched down both flanks but, equally, Dortmund was increasingly exposed to Monaco's slick counterattacking.