On Monday, Donovan McNabb and the Washington Redskins reached agreement on a five-year contract. On Tuesday, the deal's details became public, through a source at the NFL Players Association.

McNabb's five-year extension is worth $70 million and can get to $78.5 million if he is on the active roster for every game in those five seasons. The deal's maximum value is $88.5 million if McNabb leads his team to a Super Bowl victory every year.

But the real question is how much he'll actually earn and whether it will be in Washington.

One of the contract's most significant points is a payment due, when the Redskins must decide whether to pay McNabb a $10 million option bonus. If they do, it would trigger the rest of the contract and make Washington liable for McNabb's $2.5 million base salary in 2011.

The exercise period on the $10 million option bonus in McNabb's contract is between the first day of the league year and the day after the first game, according to an NFL Players Association source. This means Washington can go through this winter and spring before it makes a determination on whether to exercise the $10 million option bonus payment in McNabb's deal.

If they don't, then McNabb would stand to cash in. McNabb then would get to become an unrestricted free agent at a time when multiple teams will be looking to upgrade their quarterback, the position that commands the game's priciest salaries.

McNabb's agent, Fletcher Smith, clarified some of the details of McNabb's deal Tuesday to The Associated Press and acknowledged while the contract is worded so that it has "$40 million in guarantees," the Redskins do have an option to cut McNabb at the end of the season with no further money due.

Asked about his chances of not being with the Redskins next season, McNabb said Tuesday on his weekly radio show on ESPN980 that there is language in the deal that was necessitated by the possibility of a lockout.

"That doesn't mean I won't be a Redskin," McNabb said. "I will be here next year. ... Not just next year, but after that as well."

McNabb also responded to Cincinnati Bengals receiver Terrell Owens, who took a dig at McNabb over the Monday night debacle by tweeting: "How do u justify a 78 million dollar contract w/this type of performance?"

"It's funny he's worried about what I'm doing," McNabb said. "When what are they, 2-6?"

The Bengals are actually 2-7.

Option bonuses have become standard in all current deals due to the league's financial uncertainty and the lack of a collective bargaining agreement.

New England Patriots quarterback Tom Brady has injury guarantees that become fully vested at a future date, like McNabb.