C.J. Mosley has been one of the most important players to the Baltimore Ravens' success for a long time now. The fifth-year player for the Ravens is the leader of the defense. He's made four Pro Bowls. Much like Brian Urlacher of the Chicago Bears and Ray Lewis in the past for the Ravens, Mosley is an excellent 4-3 middle linebacker.

He has had nine career interceptions along with six forced fumbles and 35 pass deflections. He's had 90+ tackles every season, 100 tackles four plus times. His rookie season he eclipsed 150 tackles, something that only the league's elite linebackers are able to accomplish. His 469 tackles since 2014 ranks fourth in the NFL.

Mosley solidifies a defense that allowed the second least amount of points in the NFL. The Ravens only allowed 17.9 points in every contest. Without Mosley, they would have a huge hole in their defense.

This upcoming offseason, Mosley is an unrestricted free agent. He's able to go earn a contract elsewhere. A team like the Indianapolis Colts, who just switched last year to a 4-3, have the cap room to bring him in on a huge contract.

The Ravens will have around $21 million to work with this offseason. They'll have to stretch out contracts to gain any more space. Though Mosley won't cost $20 million a year necessarily, he would take up the majority of that cap. The team needs to do everything they can to get him on a team-friendly contract. They need to keep him around if they want to continue having an elite defense.

According to Spotrac.com, Mosley's projected market value is a five-year, $48,859,429 deal with an average salary of $9,771,886. The linebacker's current average salary is $2,197,001. The 26-year-old will demand a heavy contract in free agency. A contract around $10 million a year for five years is a huge commitment, but one the Ravens need to make.

Plenty of teams will pursue Mosley this offseason, but the Ravens need to do whatever it takes to bring him back.