In 2013, Bayern Munich and Barcelona met in what turned out to be a very one-sided clash. Over two legs, Thomas Muller, Arjen Robben and Mario Gomez all got on the scoresheet to give Bayern Munich a 7-0 aggregate win.
This year, we're expecting a much closer game than we had before. Barcelona and Argentina star Lionel Messi spoke pre match about what we could expect from the Champions League clash.
"It is an important game for everything that it represents, it's a semi-final," he was quoted as saying by Goal. We remember the game two years ago of course, but this is a completely different game to the one two years ago."
Speaking about Guardiola, Messi said: "We had a fantastic relationship when he was here. Since he left I have seen him a few times but we don't have any kind of relationship.
"Guardiola knows us, he knows us all well. We were lucky enough to win a lot of titles with him. He is a coach who studies everyone."
Messi went on to talk about his personal experience with Guardiola.
"We had a great time when Pep was here," he continued. "We won a lot of titles and I grew a lot - that was the time I grew most as a footballer."
News broke recently that Bayern Munich striker Robert Lewandowski would most likely be playing in a face mask, having been seen training wearing one with Bayern Munich.
Despite this, Messi doesn't believe that it will effect the Polish strikers form in front of goal. "It's not the first time a player has worn one. I don't think he will have any problem playing in a mask."
The Argentine was also asked about how Barcelona's current front three, commonly referred to as MSN (Messi, Suarez, Neymar), compares to other teams he's played in.
"I have been lucky enough to play with some great players," Messi added. "I enjoy the ones I am playing with today, but I can't say if it's the best front three.
"We understand each other well on and off the pitch, but I have had great team-mates alongside me in attack in other forward lines as I have today."
Can MSN break through the Bayern Munich defence? Who will go through to the final? Let us know in the comments!