That's the report around the Twitterverse, and Rotoinfo has this blurb:
What I don't know about Tyler Clutts would fill a book. The size of that book would be determined by how interesting Tyler Clutts is. Which is a long way of saying, I have zero idea about anything pertaining to this chap. I have an email out to a Bears-fan friend, however, and after the jump I'll cobble together whatever I can find on these here internets about Mr. Clutts.
Tyler Clutts is an American football fullback for the Chicago Bears of the National Football League. He played college football at Fresno State, where he also played defensive end and recorded 23 ½ sacks.
Clutts went undrafted in 2008, then signed with the Edmonton Eskimos of the CFL. After two years, he went to the Utah Blaze of Arena Football. From there, it was a one-year stint with the Sacramento Mountain Lions, where he switched to fullback.
The Browns signed him to their practice squad in 2011, and the Bears, enamored (relatively speaking) with what they saw out of him in week 4 of the 2011 preseason against Cleveland, signed him. He filled in for Chicago after their longsnapper was injured.
That's pretty much it.
As for Sherrick McManis, vaya con dios. We'll always have your INT against the Giants in 2010.
EDIT: Should add that McManis went to Northwestern (WHASSUP, VEGA?!), so this move is probably very much to his liking, all things considered.