LONDON — It had all the hallmarks of an afternoon of speed dating. Strangers hoping to find that right match.

On a gloriously warm Tuesday this week, a group of soccer executives, from clubs large and small from across Europe and even as far afield as Brazil and the United States, were getting to know each other at 15-minute intervals inside a banquet hall at Stamford Bridge, the West London home of Premier League giant Chelsea.

Outside, tourists visiting the stadium frolicked in the sunshine of the stands. Inside the cloistered, carpeted Centenary Lounge, executives were getting down to the serious business of negotiating player trades as the summer transfer window, an annual multibillion-dollar marketplace, reaches its climactic rush to fill rosters or find new or temporary homes for unwanted or untested talent before the window slams shut in a matter of weeks.

With tables numbered and organized in rows, executives wielding brochures and tablets showed off their inventory in short introductory meetings that ended with the sound of a bell and the appearance of two women armed with boxing-style cards announcing the start of the next round of talks.