READY TO GO!
Three-time Pro Bowler Donald Penn says he ain't callin' his NFL career quits just yet ... the offensive lineman tells TMZ Sports he's ready to play if a playoff team needs him!!
And, with the Rams recently losing left tackle Andrew Whitworth to a knee injury ... the dude says Sean McVay should hit him up!!!
"Why ain't ya'll call me yet, man?!" Penn says. "McVay, come on, baby. You my dog! You know what I mean? Hit me up if you need me!