Borussia Dortmund's UEFA Champions League quarter-final with AS Monaco promises to be a goal-busting affair with the two teams among Europe's most attacking sides.

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bundesliga.com looks at five sub-plots to one of the most exciting ties of the round.

© gettyimages / Lukas Schulze

1. Auba's reunion

He is such a BVB icon, but hard to believe as it might be, Pierre-Emerick Aubameyang could have been on the opposite side on Tuesday. "To sign for Monaco is an opportunity," he said when, in summer 2010, he joined the principality club on loan from AC Milan. Two strikes in his first four games boded well, but the goals dried up, and when coach Guy Lacombe was replaced by Laurent Banide, so too did his first-team opportunities. The loan move was ended halfway through the season, he joined Saint-Etienne on loan instead and, without knowing it, was on a path headed for Dortmund.

2. Youngsters

In teenagers Christian Pulisic and Ousmane Dembele, BVB boast two of the most highly-prized youthful talents, the latest to come to the fore internationally with Die Schwarzgelben. Monaco, despite being bankrolled by a Russian billionaire, are also putting their faith as well as money into youth with Bernardo Silva (22), Thomas Lemar (21) and Kylian Mbappe (18) rising to the fore. The battle between the quality youngsters — many of whom are already full internationals — should provide fireworks.

Watch: BVB's young guns

3. Goals

This may be tempting fate, but surely this tie will be one absolutely jam-packed with goals. Only Barcelona (26) can boast a better scoring record in the Champions League this season than Thomas Tuchel's men (25) while Monaco have hit 88 goals in just 31 league matches to climb to the summit of the French top flight. With goalgetters proven on the European stage, such as Radamel Falcao and Aubameyang, on show, you shouldn't take your eyes off this one for a second.

© imago / Jan Huebner

4. Coaches

There is up-and-coming talent not only on the pitch. Thomas Tuchel is only 43, but his Monaco counterpart, Leonardo Jardim, is almost a full year younger. The BVB man had the edge last season when he guided his team through to the Europa League quarter-finals while Jardim's men dropped out in the group stage.

However, only the season before, Jardim's maiden campaign in the principality had ended with a narrow Champions League quarter-final defeat to eventual runners-up Juventus. Both have proven bright pupils so far, and Tuesday's game at the Signal Iduna Park will be another major lesson in their education at the very highest level of club football.

Watch: Take a virtual tour of the Signal Iduna Park

5. Fans

"The Monaco players told me they're looking forward to seeing the Yellow Wall," Dembele told L'Equipe on Monday. But are they really? Inspiring as it might be for the home side and impressive to impartial observers, it must be incredibly daunting for opposing teams. It must be all the more so for Monaco who average just over 10,000 for normal home games in Ligue 1, eight times fewer than Dortmund's. True, UEFA rules mean the Signal Iduna Park capacity will be reduced to around 66,000 for Tuesday's match, but even so…will Monaco's players be defiant or deflated at the sight of it?

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