Borussia Dortmund's 4-1 win over Real Madrid in the first leg of their Champions League semi-final tie shared the headlines with the news that Mario Gotze is leaving to join Bayern Munich and further reports that Robert Lewandowski is set to follow.
It has certainly been a turbulent week for Dortmund, who turn their focus to the remaining four Bundesliga matches with transfer rumours and thoughts of the second leg in Madrid on their minds.
"Just calm down everybody," said coach Jurgen Klopp at the pre-match press conference.
"Of course I can understand people getting worked up when players leave, but I am totally relaxed about it all.
"There are no guarantees in football. Other mothers will also have great lads who can play decent football.
"Either we will be left with good players, or a mountain of cash with which we can go and buy some good players."
All eyes will still be on Lewandowski on Saturday, and not just because of the transfer speculation.
The Poland international has scored in each of his last 12 games for the club, setting a new club record and closing in on a league record of 14 games set by Gerd Muller.
Fortuna coach Norbert Meier, who witnessed Lewandowski's four-goal salvo against Real first hand on Wednesday, hopes he is given a rest this weekend, but insists that would not necessarily make his side's chances of victory any easier.
"We have given thought to what team Dortmund are likely to field here, but whichever 11 players they chose, Dortmund would be up at the top with any side," he said.
Fortuna managed a 1-1 draw in the reverse fixture in Dortmund and Meier would welcome a repeat of that result Saturday evening.
"We've got to try to rediscover what made us so strong at the Westfalenstadion," he said.
"We delighted our fans back then and we need to perform with the same discipline. I don't think I need to stress that we are not favourites."
Meier is without six players due to suspension, but Robbie Kruse and Adam Bodzek are both available again after missing out last weekend.