The Nets and Mavericks have been in talks about a Devin Harris trade since it became apparent that New Jersey wasn't going to acquire Carmelo Anthony.

New Jersey wants the expiring contract of the injured Caron Butler, rookie Dominique Jones and a first round pick from Dallas, according to sources.

The Mavericks, sources said, "turned down" that offer because they are unwilling to add two assets like Jones and a first-rounder to go along with Butler.

Harris badly wants out of New Jersey after hearing his name in trade rumors for more than a year.

Negotiations are expected to continue, but the two sides have yet to reach a consensus on workable trade terms.

Portland is the only other serious suitor for Harris, who the Mavericks traded to the Nets back in February of 2008.