How he fits:
Well, Kamal is an athlete and his position is a little up in the air. Here are some of the possibilities:
Kamal's frame and athleticism aligned with the H-back spot in Matt Limegrover's offense. While Limegrover is no longer calling the plays, Martin is still the sort of player who can attack the defense as a tight end. He has the potential to bulk up further while maintaining good spped for his size. This would allow him to get mismatchs on linebackers/safeties and exploit quick releases up the seem or crosses.
There is also a chance he could play linebacker. The defensive coaches have a fondness for length at outside linebacker to help block passing lanes, and Martin could have just enough athleticism to hang with slot WRs and tight ends at Sam.