Tony Dorsett's agent will propose contract revisions Monday that could finally free the Dallas Cowboys' star running back to join the Denver Broncos.

The trade negotiations pronounced dead April 22 by Broncos coach Dan Reeves are alive and advancing. "At least they're making headway," Cowboys coach Tom Landry said Friday.Dorsett's agent, Witt Stewart, estimated the chances of resolving any financial obstacles at 90 percent. And Dorsett himself is so optimistic, he has told friends in Dallas that he expects to be in Denver by the end of next week.

The Broncos, who have yet to hear Stewart's proposal, aren't so sure.

"The agents are still talking to John Beake (Broncos general manager)," Reeves said. "But I don't think it's anything to get excited about."

Stewart is excited anyway, saying, "I've done some creative things to come up with a new way of doing this so that it works," he said. "I'm confident I can figure it out and make it work. All I'm faced with is figuring out this annuity."

The Broncos have been interested in acquiring Dorsett since last fall, but they have been reluctant to accept a 34-year-old athlete making at least $700,000 each of the next two years, especially when the entire contract is guaranteed. None of the other Broncos' contracts, including John Elway's, is guaranteed.

Of Dorsett's $700,000, about $200,000 is designated for payment into an annuity. The Broncos refuse to pick up the annuity and the Cowboys refuse to absorb it. But Stewart thinks Dorsett could make up the difference in commercial opportunities.

"I've spoken to companies that would be more willing to commit themselves to him if they know his future is in Denver," Stewart said.

Those companies include Converse Shoes and McGraw-Hill Publishing. Dorsett has endorsed Converse his entire professional career, and McGraw-Hill is about to authorize the work on Dorsett's autobiography. Both companies would benefit from the kind of exposure Dorsett could receive in Denver.

"The Broncos have been to the Super Bowl the last two years, and Denver has such great fans," Stewart said.