Final answer:
The Boston Red Sox offered Billy Beane a $12.5 million contract to become their general manager, the highest offer in sports history at that time.
Step-by-step explanation:
The team that offers Billy Beane a general manager position is the Boston Red Sox. The offer they make to him is an unprecedented $12.5 million, which would have made him the highest-paid general manager in the history of sports at that time.
This event is depicted in the movie Moneyball, based on the true story of Billy Beane and his analytical, evidence-based approach to assembling a competitive baseball team, despite the Oakland Athletics' limited budget.