Updated

The Dallas Cowboys and quarterback Tony Romo have reportedly reached an agreement on a blockbuster six-year extension.

The Morning News quoted a source close to the situation, which said the deal is worth $108 million with $55 million guaranteed. In addition, NFL.com reported that the pact includes a $25 million signing bonus. If so, Romo would receive more guaranteed money than the six-year, $120.6 million contract that Joe Flacco recently signed with the Baltimore Ravens.

Flacco, a Super Bowl champion, got $52 million in guarantees.

In addition, the deal would make Romo the highest paid player in franchise history. Romo will earn $11.5 million this season. The paper also stated that the new deal will reduce Romo's cap hit, which was slated to be $16.8 million in 2013.

The 32-year-old Romo, who has just one postseason win in nine seasons, would have become an unrestricted free agent after the 2013 season.

Last year, Romo threw for a career-high 4,903 yards to go along with 28 touchdowns and 19 interceptions. However, his passer rating of 90.5 was the lowest of his career.

Romo, who joined Dallas in 2003, has completed 2,097 passes for 25,737 yards, 177 touchdowns and 91 interceptions in 121 career games.

Romo's lone playoff win came during the 2009 season, when he had a 104.9 rating in a 34-14 win over the Philadelphia Eagles in the first round.