Timeline: How the NBA vs EuroLeague Rivalry Got Here

TL;DR: The current standoff has been two years in the making but crystallized in 2026: bidding closed in June, Adam Silver confirmed acquisition talks with EuroLeague in September, and the two sides meet to decide the sport's direction at Lake Como on October 5, 2026.

The Long Build-Up

2000 — The modern EuroLeague breaks away from FIBA governance, forming its own club-shareholder commercial structure. This is the model NBA Europe is now challenging 26 years later.

Roughly 2024 — NBA executives, led by Commissioner Adam Silver, begin serious exploratory work on a European league alongside FIBA. ESPN later reports that the sheer amount of time this consumed was "practically slowing down expansion back home in the US" — i.e., Seattle and Las Vegas, the NBA's two long-standing domestic expansion candidates, have effectively been queued behind the European project.

Early 2026 — NBA Europe formally opens franchise bidding. More than 120 potential investors register interest; more than 20 existing sports clubs across Europe submit proposals.

June 30, 2026 — The secondary bidding window closes. Financial advisors JPMorgan Chase and The Raine Group register finalized bids from more than twenty ownership consortiums across twelve target metropolitan markets in seven countries. Some city packages clear the $1 billion mark.

September 15, 2026 — At the NBA's Board of Governors meeting in New York, Adam Silver publicly confirms the NBA has engaged in negotiations over acquiring a controlling equity stake in EuroLeague itself, rather than only building a rival league from scratch. His quote: "We believe that the league would be strengthened by joining forces with the EuroLeague... I think we would all be better off as a unified front in Europe." He also signals flexibility on timing, floating a scaled-down competition as early as summer 2027 if the full 2027-28 rollout isn't ready.

September 17, 2026 — EuroLeague CEO Chus Bueno responds publicly, confirming structured talks are happening under NDA but stressing no formal offer has been received: "If an offer or a concrete proposal comes from the NBA, we would evaluate it carefully and, as appropriate, present it to our owners."

September 18, 2026 — Panathinaikos majority owner Dimitris Giannakopoulos gives a characteristically blunt interview reasserting his club's ambitions (including reported interest in recruiting Nikola Jokić) while criticizing what he sees as NBA gatekeeping of star power in Europe.

October 5, 2026 (scheduled) — EuroLeague's licensed club owners convene at Villa d'Este on Lake Como for an extraordinary summit. Agenda: evaluate a potential NBA buyout, review EuroLeague's own 20-to-24-team expansion plan, and finalize calendar changes. This is the meeting the entire European basketball business is currently waiting on.

Target: October 2027 — NBA Europe's planned tip-off, though Silver has already signaled this could slip or be preceded by a smaller-scale launch.

Two Roads From Here

If EuroLeague's owners accept an NBA equity stake, the sport heads toward consolidation — legacy brands like Real Madrid, Panathinaikos and Fenerbahçe folded into a single commercial structure alongside new NBA-backed franchises in London, Paris and Manchester. If they reject it, Europe gets two competing top-tier leagues, with the NBA's $3 billion reserve fund available to buy out defecting clubs at their reported €10 million EuroLeague exit price (see EuroLeague vs NBA Europe: Structure, Teams and Money Compared for how that clause works) while building arenas from scratch in markets that don't have one yet.

Either way, the clubs and cities involved are named in full in NBA Europe Explained: Teams, Cities, Launch Date. This piece is part of our ongoing NBA Europe vs EuroLeague business playbook.

Sources: BasketNews, Eurohoops, ESPN reporting cited via industry summaries, EuroLeague and NBA public statements. Accurate as of September 22, 2026 — the October 5 summit outcome will supersede parts of this timeline once it happens.