"The final significant hurdle for a blockbuster four-team trade that would send Carmelo Anthony to the New Jersey Nets hinges on the NBA All-Star forward's willingness to agree to a contract extension with the Nets – and Anthony was progressing toward acceptance of that scenario, league sources told Yahoo! Sports.

League sources told Yahoo! Sports on Saturday there's some disagreement in the Nuggets organization about whether to take the present package for Anthony, or wait and try to get something better. Sources say the Nuggets were hoping the Los Angeles Clippers and Chicago Bulls would re-emerge with offers over the weekend that included Blake Griffin and Joakim Noah, respectively, but Clippers and Bulls sources insist that those players remain off limits in talks.

As of Saturday afternoon Anthony planned to return to Denver on Sunday from his home in Los Angeles, a league source said.

Meanwhile, the Nets are determined to get back a point guard to replace Devin Harris, who would go to the Charlotte Bobcats as the four-team deal is currently constructed. Charlotte doesn't want to give up point guard D.J. Augustin to the Nets, so New Jersey has begun exploring how to expand the trade to include more teams and more players in hopes of landing themselves a point guard to replace Harris."