Williams has agreed to a five-year maximum rookie extension that could reach $287 million, according to ESPN. This OKC "big three" is now locked in with the Thunder for multiple years and could account for as much as $822 million on the payroll.

After winning winning the NBA Finals, Thunder All-Star Jalen Williams agrees to a five-year contract extension, with $287 million

The Oklahoma City Thunder and forward Jalen Williams have agreed to a five-year max extension worth as much as $287 million, according to ESPN's Shams Charania.