According to Marc Stein of ESPN, Dirk Nowitzki will not take the final year of his contract.

The Mavericks will try to retain Nowitzki and reach a new contract before July 1.  But with that date approaching, it is now likely that the Dallas All-Star will join this summer's high-profile free-agent class.

"We're going to do everything we possibly can to make sure Dirk is a Maverick for a long, long time," Donnie Nelson said.