The Detroit Free Press (Vince Ellis) reports: The Pistons will likely undergo a major roster overhaul in the off-season. Besides Antonio McDyess, Rasheed Wallace, Kwame Brown and Allen Iverson are unrestricted free agents. Iverson is gone, Wallace is likely to leave and McDyess is a question mark. It’s Brown’s option whether he will stay or not, but with a $4-million contract guaranteed, it’s hard to see him finding that kind of deal anywhere else. Walter Herrmann and Will Bynum are restricted free agents. It’s hard to see Herrmann back, but it’s the team’s option on Bynum and he’s expected to return. As for Michael Curry, it appears he will return for a second season. He has two years left on the $2.5-million-a-year deal he signed last year.