Image source, AP

What are the chances of this semi-final going all the way to penalties just as it did when these two met at the same stage two years ago? Two goals from Cristiano Ronaldo cancelled out Bayern's slender 2-1 first leg lead before an Arjen Robben penalty took the tie to spot-kicks.

And, surprise, surprise, the Germans won it with Bastian Schweinsteiger converting the decisive effort to give Bayern a 3-1 shoot-out win. Cue floods of tears from Real's fans and players. However, Bayern were sobbing themselves the following month after losing the final to Chelsea in their own stadium.

Image source, Getty Images

Abdullah Mulla:, external Fully expecting Real v Bayern to be explosive.

Abraham Oluwatunmise:, external Fancy a 3-1 Bayern win.

Rezaa Sait:, external Take note Jose Mourinho. No matter who, no matter when, no matter where, always play your strongest team to win. No buses tonight.

Image source, Nike Football

So, it's true - everything Cristiano Ronaldo touches really does turn to gold. The Real Madrid and Portugal forward only needs one more goal to notch his half century for club and country this season.

Will he achieve the feat wearing his special white and gold Nike boots? The 29-year-old is due to debut the footwear against Bayern to mark winning the Ballon d'Or award earlier this year. Will the former Manchester United man strike gold against Bayern?

Abu Jawadh:, external What a game for the neutral. I predict a 3-2 Madrid win, Ronaldo with two.

Seamus in Warsaw:, external Mourinho and Chelsea are not involved, so it it will not be a boring.

Thomas Broadley:, external Two giants of European football who play the beautiful game in a beautiful way. None of this 'park the bus' rubbish.

Elsewhere, Manchester United winger Adnan Januzaj has decided to represent Belgium in international football. The Red Devils' national coach Marc Wilmots made the announcement on Twitter and said he was "delighted" by the player's decision.

Januzaj was born in the Belgian capital of Brussels to Kosovan-Albanian parents and joined United in 2011. The 19-year-old could have played for Kosovo, Albania, Turkey, Serbia and, potentially in the future, England.

There's more on this story on the BBC Sport website.

Image source, Jack Wilshere

Arsenal and England midfielder Jack Wilshere:, external Me and the Peppa Pig addict waiting for Madrid to beat Bayern! #VamosMadrid

Paris St-Germain may have seen their Champions League prospects ended by Chelsea, but Laurent Blanc's side are edging ever closer to the French League title. A 1-0 win over Evian earlier has put them 10 points clear at the top of the table with four games remaining.

Gary Lineker
BBC Sport

I suspect tonight's Champions League semi will be a proper game of football. Two teams with one thing in mind - to attack!

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Gareth Bale was Real's goal hero last week when his stunning late winner clinched Carlo Ancelotti's side the Copa del Rey against arch-rivals Barcelona. But the 24-year-old will have to be settle for a place on the bench after suffering from a bout of flu.

According to reports, Bale was unable to join up with the team at their hotel after training on Tuesday. Real medical staff had recommended he remain at home to avoid infecting his team-mates.

Swansea midfielder Wayne Routledge:, external So who's going for a 0-0 tonight then? Me neither. . .

Hull City midfielder Tom Huddlestone:, external What's everyone's predictions for Real v Bayern? Fancy a good few goals in this one.

Bayern boss Pep Guardiola is certainly taking no chances on the goalkeeping front. Manuel Neuer is fit to play following a calf injury but the holders have named two goalkeepers among his substitutes in Leopold Zingerle and Lukas Raeder. Wonder if either are any good at coming off the bench to grab a late goal?

In five previous European Cup semi-finals between the clubs, Madrid's only win came in 2000. Bayern progressed in 1976, 1987, 2001 and 2012.

Bayern have lost on their last five visits to the Bernabeu Stadium in the Champions League, including the 2010 final they played there against Inter Milan.

Bayern's former Barcelona boss Pep Guardiola has enjoyed nine wins, four draws and just two defeats against Real Madrid in his managerial career.

So, no Gareth Bale in the Real Madrid starting line-up. How much of a loss is that to the hosts? Where will this titanic European tie be won and lost? Can Cristiano Ronaldo make a scoring return?

Let me know. You can text in on 81111 (UK Only), or tweet us using the hashtag #bbcfootball., external

BBC Radio 5 live

Join Mark Pougatch and the gang for radio coverage of the big game.

Five live sport begins in a few moments at 19:00 BST for all the latest on the goings-on at Old Trafford before coverage from the Bernabeu Stadium.

You can listen on your radio, online, on this page and through the BBC Sport app.

Real Madrid: Casillas, Pepe, Ramos, Coentrao, Carvajal, Alonso, Modric, Di Maria, Isco, Ronaldo, Benzema. Subs: Lopez, Varane, Marcelo, Bale, Casemiro, Illarramendi, Morata.

Bayern Munich: Neuer, Dante, Rafinha, Boateng, Lahm, Ribery, Robben, Alaba, Schweinsteiger, Kroos, Mandžukic. Subs: Zingerle, Raeder, Martinez, Gotze, Weiser, Muller, Pizarro.

If Tuesday's tie between Atletico Madrid and Chelsea, which ended in a goalless stalemate, was more like a tactical game of chess than a Champions League semi-final then expect fireworks at the Bernabeu.

This is the 21st meeting between Real and Bayern, with the previous 20 meetings, all in Europe's most prestigious club competition, producing 59 goals.

Real have scored an astonishing 32 times in 10 Champions League games this season, while their German opponents have managed 24. Standby for a 0-0 draw then!

Goalkeeper Manuel Neuer and striker Mario Mandzukic return to Bayern Munich's starting line-up.

Cristiano Ronaldo starts for Real Madrid. Gareth Bale, who has been suffering from a bout of 'flu, is on the substitutes bench.

Image source, Marca

The front page of Spanish daily sports newspaper Marca describes this showdown as "the night of champions". Crucially they also claim that Ronaldo, who has missed the last four games with a hamstring problem, will "lead the attack."

They don't often get the Madrid line-up wrong and with Carlo Ancelotti having already said that he was "confident" the Ballon d'Or winner would be available, it seems unlikely now that he will miss out. Team news on its way. . .

Image source, Getty Images

You can be sure Pep Guardiola will be doing everything to prolong Real's wait for Europe's most sought-after prize. The 43-year-old Spaniard is chasing a remarkable haul of five trophies in his first season in charge of Bayern - not a bad start for the former Barcelona boss.

His side has already won the Bundesliga in record time, as well as the Uefa Super Cup (beating Chelsea on penalties) and the Fifa Club World Cup. Bayern play big rivals Borussia Dortmund in the final of the German Cup on 17 May and will have designs on retaining the Champions League if they can get past Real Madrid.

Jupp Heynckes signed off with a domestic and European treble last season for the first time in Bayern's history, but those big shoes could yet be more than filled by Guardiola.