ESPN's Adam Schefter has the details of Washington Redskins quarterback Donovan McNabb's five-year contract extension.

Schefter reports that the only guarantee right now is the $3.5 million signing bonus McNabb received this season, but that over $25 million additional dollars are guaranteed against injury.

Here's the breakdown, via Schefter:

Signing bonus: $3.5 million
Option bonus: $10 million (2011)
Workout bonuses: $250,000 per season between 2011-15 ($1.25M total)
Roster bonuses: $8.5 million (if active all 88 games)
Playoff incentives: $2 million per season between 2011-15 ($10M total)

Base salaries: $55.55 million

2011: $2.5 million
2012: $12.75 million
2013: $13 million
2014: $13.75 million
2015: $13.55 million