Marc Stein and Chad Ford

The Miami Heat have spent the final hour-plus before the NBA's 3 p.m. ET trading deadline trying to convince the Utah Jazz to surrender Carlos Boozer, according to NBA front-office sources.

One source with knowledge of Utah's thinking told ESPN.com that a trade is "unlikely," but another source with knowledge of the negotiations told ESPN.com that the teams were still talking entering the last half-hour before the deadline hit.

ESPN.com reported earlier Thursday that the Heat and Jazz had opened discussions on a Boozer deal. Yahoo! Sports reported that the Wizards were recruited as a third team to try to help facilitate the deal, but one source told ESPN.com that the Wizards were no longer involved in the talks.

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