Dayot Upamecano will be tasked with marking Erling Haaland when RB Leipzig take on Borussia Dortmund in the DFB Cup final on Thursday, but what would a team look like if you were allowed to play them both on the same side?
Peter Gulacsi (RB Leipzig)
Peter Gulacsi is the unmistakable No.1 in this side. Whilst Dortmund have shared playing time between Swiss pair Marwin Hitz and Roman Bürki, Gulacsi has underpinned the league's meanest defence. With only 28 goals conceded, the Hungarian is one of the most reliable shot-stoppers in Germany.
Nordi Mukiele (RB Leipzig)
Dayot Upamecano (RB Leipzig)
Widely regarded as one of the best young defenders in world football, Upamecano will - like his coach Julian Nagelsmann - be swapping Leipzig for Bayern Munich in the summer. The 22-year-old Frenchman has been the third-fastest centre-back in the league this season at 21.4mph, as well as being Leipzig's most-used outfield player.
Mats Hummels (Borussia Dortmund)
For Upemacano's speed, read Hummels' reading of the game; for his youth, read experience. Hummels remains an incredible central defender in his own right, able to ping defence-splitting passes from deep, often with the outside of his right boot, whilst also getting on the end of his teammates' deliveries to the tune of five goals scored.
Angelino (RB Leipzig)
Angelino has not been included in Leipzig's squad for the DFB Cup final, and Dortmund boast a fine attacking left-back of their own in Raphael Guerreiro, but the Spaniard's output this season means he simply cannot be ignored for a combined XI. Eight goals and 11 assists in 2020/21 and Manchester City's loss has very much been Leipzig's gain.
Watch: Angelino under the tactical microscope
Marcel Sabitzer (RB Leipzig)
Jude Bellingham (Borussia Dortmund)
Bellingham has been a revelation in Dortmund's midfield this season, his all-action yet measured performances belying the fact that he is still only 17. The Englishman would have scored goals home and away against Manchester City in the UEFA Champions League this term if not for refereeing decisions, and City coach Pep Guardiola was left particularly impressed. "I can't believe it, maybe he's a liar!" the former Bayern man said when pressed on Jude's age.
Jadon Sancho (Borussia Dortmund)
The most potent winger in the Bundesliga, if not the world, Sancho has overcome a torn thigh muscle sustained at the start of March to rack up 14 goals and 18 assists in all competitions. If England want to have a chance of winning this summer's UEFA Euro 2020, Sancho - and indeed Bellingham - should be in the squad.
Watch: The best of Jadon Sancho at Borussia Dortmund
Dani Olmo (RB Leipzig)
Once of Barcelona, Olmo has had to bide his time since joining Leipzig from Dinamo Zagreb in 2020. It has been worth the wait for Roten Bullen fans, though. Olmo may have Christopher Nkunku and Emil Forsberg for company in the final third, but the Spaniard is the primary reason club captain Marcel Sabitzer has been repurposed as a deeper-lying midfielder under Nagelsmann this term.
Marco Reus (Borussia Dortmund)
Erling Haaland (Borussia Dortmund)
A 6'4"-tall, left-footed, goal-hungry Norwegian? Leipzig and Dortmund both boast one in Alexander Sörloth and Erling Haaland, but there are very few fantasy line-ups the BVB man wouldn't walk into. Haaland's 37 goals in all competitions this season have been scored at a rate of one every 88 minutes he has played, and Leipzig will have been gutted to learn that the 20-year-old is fit to play on Thursday.
Watch: All of Haaland's Bundesliga goals