According to Scout.com's Aaron Wilson, the Detroit Lions have signed center Rudy Niswanger, who previously played for the Kansas City Chiefs. As Arrowhead Pride's Joel Thorman points out, this former Chief doesn't have a connection to the Lions because of Gunther Cunningham. Niswanger's connection comes in the form of offensive line coach George Yarno, who was Niswanger's position coach in college at LSU.
After going undrafted from LSU in 2006, Niswanger signed with the Chiefs. He spent the last five seasons in Kansas City and started all but one game in 2008 and 2009. He appeared in 10 games last year, but he didn't make any starts. That was also the case in 2006 and 2007. He appeared in a total of 15 games, but his only starts came in '08 and '09.
Since this move has not been officially announced, it's not clear who the Lions have released to make room on the roster for Niswanger. The trend lately has been for former undrafted free agents to be let go when a player with more experience is signed, so that could certainly be the case once again.
Once the move is officially announced, I will post an updated 90-man roster that includes all of the moves made so far this week.