With Marco Reus injured for four weeks, Borussia Dortmund head coach Lucien Favre faces some difficult choices.
The BVB boss was busy trying to fit all his forwards into a working formation and now must plan without his captain. Reus's absence opens up a slot in the starting XI, but Favre still has decisions to make - including whether all three of his teenage talents can start together in attack.
Haaland has scored seven of those 15 goals, having came off the bench twice to begin life as a Borussia Dortmund player. The €20 million January arrival has already proved to be a bargain, adding an eighth goal in midweek in the DFB-Pokal defeat to Werder Bremen. There had been doubts as to whether he could step up to the German Bundesliga after his breakout performance in Austria for Red Bull Salzburg (28 goals in 22 games in all competitions), but a striker with his movement and composure is sure to be a success in any league.
His seven goals in 136 minutes of Bundesliga action see him average a goal every 19 minutes so far, but this is sure to increase once he gets more starts under his belt. Having proved his fitness, Haaland will start in attack this weekend against Bayer Leverkusen, whose vertical style often leaves them open to counter-attacks. The 19-year-old forward is averaging 5.3 shots per 90 minutes in the Bundesliga, up from 4.8 in the Austrian Bundesliga, so expect him to continue his scoring streak.
The way Dortmund play is resulting in a lot of touches in the opposition penalty area for the forward, who is averaging 10.9 touches in the box per 90 minutes over his first three games.
Haaland is a very confident man. He believes that despite his brilliant start to life in Dortmund, he can still improve. "I still have to get fitter, I need more games. I am not at 100 per cent yet," he told Sky Germany.
While Haaland is making headlines for his amazing start, Jadon Sancho continues to get the job done for Dortmund. The 19-year-old winger has scored at least 10 goals and provided more than 10 assists for the second season in a row, and looks set to achieve personal bests in both categories.
The English forward has already equalled his 12 league goal tally from last season, while he has provided 12 assists and is joint top of the Bundesliga assists chart with Bayern Munich's Thomas Müller. He needs just two more assists to equal last year's career best of 14, which saw him finish top of the assists chart for 2018-19.
Haaland and Sancho have already formed a strong partnership at the Westfalenstadion, with the Norwegian joking that he will have to stop converting chances from his team-mate for fear he could leave this summer: "You see on the pitch that he is very good and I do not want him to give me too many assists, so we have to keep it down a bit."
The Sancho assist train shows no sign of slowing down, with the teenager leading all players in Europe's top five leagues for assists since the start of 2018-19. He is creating 0.7 big chances per game this season, while his completed dribbles per game (3.4) is causing defenders nightmares.
Dortmund's third teenage attacking star has just begun to make an impact at the club, having turned 17 in November. In January, he broke the record for the youngest American to play in the Bundesliga, bettering Christian Pulisic's previous milestone and just this week, he set another record, becoming the youngest goalscorer in DFB-Pokal history.
His instant impact has seen Reyna earn rave reviews from team-mates and club staff and Favre even hinted that he is considering him for a spot in the starting XI: "Why not? It's possible. He can play many positions in attack."
Reyna is the son of U.S. soccer royalty, with father Claudio one of the country's most capped internationals and mother Danielle Egan also a former USWNT international. While both parents were midfielders, Gio Reyna is an attacking player, and has a brilliant record for America's underage sides - he has eight goals in 17 games for the Under-17 team so far.
His Bundesliga appearances have been limited to cameos from the bench so far, while his run-out in the cup was also a 24-minute substitute appearance. However, given Borussia Dortmund's history of cultivating young talent, he is sure to add to his 32 minutes of league football in the coming weeks