Dortmund's New Dimension: The Impact of Konstantelias and Karetsas

The roar inside Signal Iduna Park on Saturday night felt different. Louder, sharper, full of that old Dortmund crackle that had gone missing too often in recent years.

Two new names were behind it.

Giannis Konstantelias and Konstantinos Karetsas walked into the Bundesliga like they owned the stage, tore open Hamburger SV between the lines and gave Borussia Dortmund exactly what Niko Kovac had promised: a new dimension.

"They are two lads who can bring us a different dimension here, and will do too – they showed that today," the BVB coach said on Sky after the 2-0 win. It didn’t sound like a throwaway line. It sounded like a plan coming to life.

A new kind of spark

These weren’t empty stepovers for the highlight reel. Dortmund’s two Greek signings, both arriving from smaller European leagues, stitched flair directly into the team’s structure. The comparison with Julian Brandt, now at Ajax, was inevitable – and telling.

Konstantelias and Karetsas can do much of what Brandt did. But they add something Dortmund have craved: the ability to ignite attacks from a standing start, to turn static possession into sudden chaos. They receive between the lines, stop, assess, then explode. One touch, one shimmy, and the whole game tilts.

They are more proactive, more vertical, more ruthless in those tight pockets. That difference was obvious from the first whistle against HSV.

For 45 minutes, Dortmund’s attacking play ran through them. Konstantelias, who had already teased his talent in the Super Cup defeat to Bayern, looked like he had been playing in front of the Yellow Wall for years. His close control at full tilt, the way he slipped through challenges, the fluidity of his movement – it all drew gasps.

He also hunted without the ball. Around the half-hour mark he snapped into a duel in midfield, won it cleanly, and the stadium reacted as if he had scored. It was the kind of aggression Dortmund fans demand from their artists.

Then came the moment that seemed to crown his evening.

Shortly before the break, Konstantelias made it 2-0 and marked his first Bundesliga goal. The finish carried a slice of luck – the shot deflected off a Hamburg defender – but the idea behind it was pure invention. A no-look effort aimed at the near corner, hit with conviction, the sort of audacity that instantly turns a new signing into a fan favourite.

"First half, top – that was perfect. We implemented everything we wanted to implement," defensive leader Waldemar Anton enthused on Sky. You could see why. For about 100 minutes in black and yellow, across Super Cup and league, Konstantelias had been the face of a refreshed BVB.

It felt like the start of something.

By Sunday, it felt like a punch to the gut.

From euphoria to devastation

A day after the opener, Dortmund confirmed the diagnosis everyone had feared the night before: cruciate ligament tear. League debut, goal, ovation – and then months on the sidelines.

"This news hits us very hard because Giannis has already shown in a very short time why we see him as a great player for Borussia Dortmund," said sporting managing director Lars Ricken. "For now, however, his focus and ours is on his recovery. Giannis has our full support in that."

The timeline is brutal. With such an injury, Konstantelias is not expected back until well into spring 2027. Kovac had already hinted at the seriousness on Saturday: "We have to talk about something more serious there. We will have the examination on Sunday. But at least it doesn't sound good, from what the doctor told me."

The incident itself was cruel in its simplicity. Shortly after narrowly missing what would have been his second goal, Konstantelias twisted his knee awkwardly in a challenge. No wild tackle, no spectacular collision. Just one wrong movement. He dropped to the turf and his expression as he left in the 54th minute told its own story.

For a player who had instantly transformed Dortmund’s attack, the loss is enormous. For the club, it’s a tactical and emotional problem. For the player himself, it’s a nightmare.

What BVB lose without Konstantelias

The 26-million-euro signing had already shown he upgrades this attack. With him, Dortmund’s play between the lines looked quicker, more unpredictable, more dangerous. Without him, the second half against HSV turned sluggish.

Yes, Hamburg improved. Yes, they pushed higher and disrupted BVB more. But the drop in mobility and imagination after Konstantelias went off was obvious.

"When Dortmund play from right to left, play into the spaces in between, then first of all you do a lot of chasing and don't really manage to get into the press. That was our problem," HSV captain Nicolai Remberg admitted on Sky. Much of that torment came from the interplay between Konstantelias and Karetsas.

The two Greeks rotated constantly, drifting into pockets, dragging defenders out of shape. Their ball control allowed them to keep the tempo high and the passing precise. It was not just pretty – it was efficient.

"Brutal," Anton called their performance. "The mobility they have, how dangerous they are – that is a huge quality at that age and it is something we need for the future as well. I'm glad we have them with us."

Now Karetsas suddenly finds himself without his perfect partner.

Searching for answers

Inside the club, the mood around Konstantelias goes beyond tactics. "I felt incredibly sorry for the lad. From day one here he has had a terrific presence, also in the dressing room. We all already like him very much," said sporting director Ole Book, who had watched the injury to the player he and the hierarchy had so strongly pursued.

Kovac’s first in-game solution was pragmatic rather than like-for-like. Marcel Sabitzer came on, offering more defensive stability but not the same spark. The Austrian is many things; a Konstantelias clone he is not.

On paper, Samuele Inacio fits the profile better. The 18-year-old is an attacking midfielder with similar instincts, but his cameo against HSV ended in chaos – a lightning red card that cut short any chance to properly assess him at this level. Throwing him straight into Konstantelias’ role would be a huge ask.

Maximilian Beier is the more seasoned option. Kovac, though, had earmarked the Germany international for one of the flanks. Moving him inside would open another hole in the squad on the wings and force a rethink of the structure that looked so promising in that first half.

All of this unfolds under the ticking clock of the transfer window. It closes on Tuesday, 1 September, at 8pm. Dortmund’s hierarchy had not planned any late moves.

"Depending on how serious the injury actually is, we will shape our further steps accordingly. But one thing is certain: over the next three days we are not planning anything," Ricken said before the full extent of the damage became official. The situation may now demand a change of stance.

The Sancho question

So who could realistically walk in and cover the Konstantelias void?

Said El Mala, once high on Dortmund’s list before the Konstantelias deal, is no longer an option after extending his contract at 1. FC Cologne. That door is shut.

Another, familiar name lingers in the background: Jadon Sancho.

On paper, he fits. He is a similar type of player – comfortable between the lines, capable of injecting dynamism from a standstill, able to unpick deep blocks with a feint or a sudden burst. The speculation about yet another Sancho return had cooled after the arrivals of Karetsas and Konstantelias. Now, the conversation could resurface.

Sancho’s best football came in a Dortmund shirt. Since leaving, his career has stalled. His contract at Manchester United has expired, his loans at Chelsea and Aston Villa were largely disappointing, and at 26 he finds himself without a club.

For BVB, that makes him an intriguing, low-risk option in financial terms. No transfer fee, but a significant wage cut would be non-negotiable for a third spell in black and yellow. Then comes the sporting gamble: can he still reach anything close to his old level?

Dortmund have just been reminded how quickly a bold plan can be ripped up by one bad step on the pitch. The question now is whether they respond with another bold move – or trust that the new dimension they glimpsed against HSV can survive months without the player who first lit it up.