The Cleveland Cavaliers are eager partners in the three-way blockbuster trade talks to send Dwight Howard to the Los Angeles Lakers, but won't proceed until the Lakers grant the them permission to talk to All-Star Andrew Bynum and his agent about the center's willingness to sign a contract extension, league sources told Yahoo! Sports.

"Cleveland will only do the deal if Bynum extends," a league official directly involved in the talks told Yahoo! Sports.

Los Angeles wants the structure of a three-team deal agreed in principle before letting Cleveland take that next step to communicate with Bynum and his representatives – and that won't happen until Orlando makes a decision that it wants to also lock-in the framework of a trade, sources told Y!

So far, Orlando has shown a level of indecisiveness in the talks, sources involved in the negotiations said.