Baltimore Ravens quarterback Joe Flacco speaks at a news conference at the team's practice facility in Owings Mills, Md., Monday, March 4, 2013. Flacco agreed to a contract that will make him the richest quarterback in NFL history after leading the Ravens to a Super Bowl XLVII victory over the San Francisco 49ers. (AP Photo/Patrick Semansky)

Baltimore Ravens quarterback Joe Flacco speaks at a news conference at the team's practice facility in Owings Mills, Md., Monday, March 4, 2013. Flacco agreed to a contract that will make him the richest quarterback in NFL history after leading the Ravens to a Super Bowl XLVII victory over the San Francisco 49ers. (AP Photo/Patrick Semansky)

Baltimore Ravens quarterback Joe Flacco speaks at a news conference at the team's practice facility in Owings Mills, Md., Monday, March 4, 2013. Flacco agreed to a contract that will make him the richest quarterback in NFL history after leading the Ravens to a Super Bowl XLVII victory over the San Francisco 49ers. (AP Photo/Patrick Semansky)

Baltimore Ravens quarterback Joe Flacco walks up to a microphone before speaking at a news conference at the team's practice facility in Owings Mills, Md., Monday, March 4, 2013. Flacco agreed to a contract that will make him the richest quarterback in NFL history after leading the Ravens to a Super Bowl XLVII victory over the San Francisco 49ers. (AP Photo/Patrick Semansky)

Baltimore Ravens quarterback Joe Flacco speaks at a news conference at the team's practice facility in Owings Mills, Md., Monday, March 4, 2013. Flacco agreed to a contract that will make him the richest quarterback in NFL history after leading the Ravens to a Super Bowl XLVII victory over the San Francisco 49ers. (AP Photo/Patrick Semansky)

Baltimore Ravens quarterback Joe Flacco speaks at a news conference at the team's practice facility in Owings Mills, Md., Monday, March 4, 2013. Flacco agreed to a contract that will make him the richest quarterback in NFL history after leading the Ravens to a Super Bowl XLVII victory over the San Francisco 49ers. (AP Photo/Patrick Semansky)

FILE - In this Dec. 23, 2012, file photo, Baltimore Ravens quarterback Joe Flacco throws to a receiver in the first half of an NFL football game against the New York Giants in Baltimore. Flacco agreed to a six-year, $120.6 million deal Friday, March 1, 2013, after leading the Ravens to the Super Bowl title. (AP Photo/Evan Vucci, File)

FILE - In this Feb. 3, 2013, file phot, Baltimore Ravens quarterback Joe Flacco (5) looks to throw a pass during the first half of the NFL Super Bowl XLVII football game against the San Francisco 49ers in New Orleans. A person with knowledge of the deal tells The Associated Press that Flacco has agreed on a new contract with the Ravens. The person spoke on condition of anonymity on Friday, March 1, 2013, because the agreement has not officially been announced. Terms of the deal were not immediately available. (AP Photo/Evan Vucci, FIle)

FILE - In this Feb. 13, 2013 file photo, Baltimore Ravens quarterback Joe Flacco (5) holds the Vince Lombardi Trophy after defeating the San Francisco 49ers 34-31 in the NFL Super Bowl XLVII football game in New Orleans. The Ravens will have to pay at least $14.896 million for Flacco to be their quarterback in 2013. The NFL set the franchise tag at that figure Friday, March 1, 2013, and if the Ravens can't reach agreement on a long-term deal with Flacco before free agency begins March 12, they could tag him. (AP Photo/Matt Slocum, FIle)

FILE - In this Feb. 3, 2013, file photo, Baltimore Ravens quarterback Joe Flacco is lifted into the air by teammates after defeating the San Francisco 49ers 34-31 in the NFL Super Bowl XLVII football game in New Orleans. A person with knowledge of the deal tells The Associated Press that Flacco has agreed on a new contract with the Ravens. The person spoke on condition of anonymity on Friday, March 1, 2013, because the agreement has not officially been announced. Terms of the deal were not immediately available.(AP Photo/Bill Haber, File)