The Mavericks still have one roster spot open and are exploring the feasibility of filling it with Kyrylo Fesenko.

Sources close to the situation told on Saturday that the Mavericks, even after signing local high school product Sean Williams as a third center earlier this week, have extended a one-year offer to Fesenko.

Toronto, Golden State and Miami are also pursuing Fesenko.

Sources say that the Raptors, with a full 15 players on their roster, are exploring avenues to create an open spot for Fesenko, who turned 25 on Saturday.