The Detroit Lions drafted Alabama's Michael Williams in the seventh round this year to fill the Will Heller/Riley Reiff role in their offense. They envision Williams as a tight end/H-back who will be used primarily in situations where extra blocking is needed. While Williams showed that he can catch at Alabama, his blocking skills are really what drove the Lions to draft him.
Since he is such a great blocker, could Williams someday end up switching positions from tight end to offensive tackle? Lions assistant director of pro personnel and former tight end Charlie Sanders thinks Williams could eventually make the switch. From the Free Press:
"One thing about it, he’s not going to get any smaller," Sanders said at the golf outing to benefit his foundation this week. "He’s 270 (pounds) now, so once he gets on a weight program and eating right, I could see him later on in his career moving inside."
I can't imagine the Lions have any immediate plans to transform Williams into an offensive tackle simply because he is going to fill a specific role at tight end/H-back in 2013. However, perhaps down the road the Lions could decide that it's best for both Williams and the team to have him make that transition to tackle.