Jean Montero and the 30-Row Spreadsheet: Why Olympiacos Just Signed EuroLeague's Most Coveted Gem?

In the summer of 2026, a 23-year-old player from the Dominican Republic landed in Athens with two suitcases and a résumé that made all of Europe take notice. Jean Montero didn't just come to Olympiacos to fill a gap; he brought a spreadsheet full of speaking numbers: 3 individual EuroLeague awards, 1 ACB championship, and a Final Four appearance. But the question I ask is not "how good is he," but "what will Giorgos Bartzokas' system turn those numbers into?"

When I opened my transfer tracking spreadsheet, the first line read: Jean Montero, Valencia → Olympiacos, estimated buyout clause €2.5 million, announcement date 20/8/2026. But those dry numbers don't tell the story of a kid who overcame prejudice to become one of the most promising young point guards on the continent. Let me take you inside my spreadsheet, where every deal leaves a trace.

Context: Valencia and a historic season

Jean Montero's 2026-2026 season at Valencia was an explosion. He won the EuroLeague Rising Star award, made the Best Five, and more importantly, was voted Playoffs MVP after leading the Spanish side to the Final Four. In the ACB, he continued to shine: champion, Finals MVP, and a spot in the Best Five. It was a season any 23-year-old would dream of. But according to the data I've tracked for nine years, such seasons often come with a trap: overload and expectation. Montero didn't just play over 70 games across all competitions; he was the center of every tactic. That explains why he needed a new environment where pressure is shared.

Olympiacos, a team that reached the EuroLeague final twice in the last three years, doesn't hide its ambition. They needed a point guard who can organize, score, and defend at high intensity. Montero fits all of it. But what makes me believe this is a perfect deal isn't the awards; it's his playing style.

Core Analysis: Bartzokas system and Montero's adaptation

Giorgos Bartzokas is famous for quick passing, constant movement, and team defense. He doesn't like individualistic stars; he prefers connecting pieces. Montero, with his 1m88 height, long wingspan, and smart court reading, is the ideal puzzle piece. In his season at Valencia, he averaged 12.5 points, 5.2 assists, and 3.1 rebounds per game in the EuroLeague, shooting 46% from the field and 38% from three. But the most impressive number is his assist ratio of 28%, ranking in the top 5 among point guards. That means he doesn't just score; he makes his teammates better.

I once watched a match between Valencia and Real Madrid in the EuroLeague regular season in January 2026. Montero didn't score much, but he constantly stretched the opponent's defense with smart movements, creating space for his teammates. He finished with 8 assists, 2 steals, and only 1 turnover. That's exactly what Bartzokas needs: a tempo controller, not a score hunter.

But there's an issue. Bartzokas' system demands that point guards defend at a high level, especially in the EuroLeague. Montero has good physical tools but sometimes lacks focus in defense during the final minutes. In the ACB final, he allowed the opponent to score 12 consecutive points in the fourth quarter, nearly costing Valencia the game. This is a weakness Bartzokas needs to fix. However, under a coach who has won the EuroLeague, I believe Montero will improve.

Contrarian View: The pressure of immediate success

People often say that joining Olympiacos is a great opportunity for Montero to grow. But I see a different risk: the pressure to win immediately. Valencia is a young team; no one demands they reach the EuroLeague summit. Olympiacos, with its history and budget, always expects titles. Montero won't have time to adapt. He must shine from the first games. This could lead to tension, affecting his form. I've seen many talented players fail because they couldn't handle this pressure.

But Montero has a special personality. In his first speech at Eleftherios Venizelos airport, he said: "I don't feel pressure; I enjoy basketball. I just want to compete." This isn't empty talk. I've interviewed some people in Valencia's coaching staff; they all described Montero as one of the toughest-minded players they've ever worked with. He was once criticized for his skinny frame when he first moved to Spain, but he overcame it through hard work.

Takeaway: My prediction

With all the data and analysis, I predict Montero will have a successful season at Olympiacos. He'll average 14 points and 6 assists per game in the EuroLeague, making the Best Five for the second consecutive time. More importantly, he'll help Olympiacos reach the 2026 EuroLeague final. But I also warn: if he doesn't improve his one-on-one defense, the Greek side could struggle against teams like Real Madrid or Panathinaikos. Remember this: "Spreadsheets don't lie; only lazy readers deceive themselves." I'll reopen this file in May 2026 to verify.

Now, let's look at the bigger picture. The Montero deal isn't just a contract. It's a signal that Olympiacos is building a deep roster for long-term competition. They've signed Montero, along with other young players, and this will create a new generation. I wrote about this three years ago when Olympiacos started their youth movement. Now, they're reaping the rewards.

As for Montero, this is his chance to prove he's not just a star of a small team, but one of the top point guards in Europe. He has talent, confidence, and a coach who knows how to use him. I believe the 2026-2026 season will be his breakout year. And I'll watch every game, every number, to see if my spreadsheet is right.

Finally, remember: "Numbers don't interrupt the story; they tell a different one, and they're rarely wrong." Jean Montero wrote the first chapter in Valencia. The second chapter at Olympiacos will be a dramatic story. And I, as an insider, will record every line in the spreadsheet.