Final answer:
Marcus Camby took money from an agent which led to UMASS having to forfeit its Final Four appearance and pay back $151,000 to the NCAA for the tournament rewards.
Step-by-step explanation:
The individual who took money from an agent and consequently forced the University of Massachusetts (UMASS) to forfeit its Final Four appearance is Marcus Camby. This incident occurred in the mid-1990s when Camby was found to have accepted illegal benefits from agents. As a result, UMASS had to vacate their 1996 NCAA Men's Basketball Tournament games, including their Final Four appearance.
The NCAA also demanded that the university return the monetary rewards they had received for their performance in the tournament, which amounted to around $151,000. The issue highlighted the ongoing concerns and discussions around amateurism and the integrity of college sports.