Le'Veon Bell's knee rehab includes mixtape rapping

Pittsburgh Steelers running back Le'Veon Bell has been relatively quiet since a torn MCL in November cost him half of the 2015 season. But he's always a must-follow on social media.

Bell's latest venture, according to his @L_Bell26 twitter account: making a mixtape.

Bell has been teasing this for a few days, essentially saying he made a freestyle rap album off the top of the dome (no written lyrics) and it's "boutta be so fire." He tweeted Monday that the mixtape is "officially done." He confirmed his musical work to twitter followers who were messaging him individually about it.

From William "The Fridge" Perry to Metta World Peace, the track record of athlete-rappers is not good. But the floor is open to Bell. Maybe he will surprise a few people.

On the injury front, coach Mike Tomlin said at his postseason press conference last week that Bell is doing well in his recovery and has visited Pittsburgh for rehab on multiple occasions.

Let's guess Tomlin will not be a featured guest on the tape.