<Dl> <Dt> Unrestricted free agents </Dt> </Dl> <Dt> Unrestricted free agents </Dt> <P> Unrestricted free agents are players with expired contracts that have completed four or more accrued seasons of service . They are free to sign with any franchise . </P> <Dl> <Dt> Undrafted free agents </Dt> </Dl>

What does restricted and unrestricted mean in nba