Perkins will be a hot commodity this summer, which makes unrestricted free agency a smart option. From the Boston Herald: “According to two league sources, Perkins has already turned down a Celtics offer that is bound by the CBA’s current restrictions — a contract extension worth slightly less than $30 million over four years, which reflects the currently mandated contract limits of a 20-percent increase and a four-year maximum. Perkins, represented by agent Arn Tellem, has opted to wait until he is an unrestricted free agent, when even in an unpredictable market he has a chance of commanding far more. Indeed, Perkins’ value is much higher when an underachieving center like Dallas’ Brendan Haywood ($46 million over the next six years) is taken into account.”