DAVIE, Fla. -- Negotiations between former Broncos quarterback Brian Griese and Miami continued Tuesday, but it wasn't clear if a deal could be completed before the end on Thursday of the Dolphins' three-day quarterback school.

The holdup is incentives, ESPN.com's John Clayton reported Tuesday.

Even though Griese is willing to accept back-up money in the first year of a multi-year contract, he's asking for starting-type incentives in case he gets into the starting lineup. As talks broke off Tuesday night, both sides were significantly apart in the incentive package. Each side exchanged two sets of proposals Tuesday.

Talks will resume Wednesday but time is running out for Griese to get into many organized practices. There are only two practices remaining this week.

"They know where we're at," Dolphins vice president Rick Spielman said before Tuesday's afternoon discussions with Griese's agent, Ralph Cindrich. "We'll see if we can bridge some things on incentives or whatever we have to do. We'll just keep working at it and see if we can get it done."

Cindrich did not immediately return a call seeking comment Tuesday.

Dolphins coach Dave Wannstedt said he had "no idea" if Griese would be signed in the immediate future.

"I was hopeful two days ago, but we'll wait and see," Wannstedt said.

Griese is a Miami native whose father -- Hall of Fame quarterback Bob Griese -- led the Dolphins during their glory days of the 1970s and won two Super Bowls with the franchise.

The Broncos parted ways with Griese on Monday, releasing him in a move that will save the club more than $6 million against the salary cap in the next two seasons, including $4.9 million this year alone.

Miami is seeking a backup for quarterback Jay Fiedler, who the team insists will be their starter again this season. Fiedler has a 28-13 record as Miami's starter; Griese was 27-24 as a starter in Denver. Ray Lucas, Fiedler's backup last season, was released in April.

The Dolphins opened their third quarterback school of the offseason on Tuesday, with four quarterbacks -- Fiedler, Sage Rosenfels, and rookies Lon Sheriff and Josh Blankenship -- on the field.

Team officials were hopeful that Griese would be signed in time to join them; in fact, Blankenship's jersey number has been switched to No. 7 from No. 14 -- Griese's number.

Players said Tuesday that the ongoing negotiations are not a distraction.

"I think he'd be a great addition to this football team," Dolphins tight end Randy McMichael said. "Of course, he's going to push Jay but I don't think he'd let him come in here and take his job. So I think it's going to make Jay a better player and that makes us a better offense."

One stumbling block is the league's salary cap. Miami has about $2.8 million remaining under this season's cap, Spielman said, but it's unknown how much of that space Griese wants or the Dolphins have offered.

"We can only do so much," Wannstedt said. "If it was up to Brian, he'd be here. His agent's got a job to do and we've got to do our job. That's where the negotiating's going right now. It's not the kid at all."

Information from The Associated Press was used in this report.