For years, Nick Mangold stood as one of the league’s very best centers. Now, he’s being asked to change positions. Teams that have expressed interest so far have asked Mangold if he’d be willing to move to guard, sources tell ESPN.com’s Dan Graziano (Twitter link). So far, he’s held off on making that commitment and he continues to wait for an opportunity to continue as a center. 
Mangold was released by the Jets late last month, allowing the team to clear upwards of $9MM of cap room for 2017. Contending clubs are expected to pursue the veteran and PFR’s Dallas Robinson speculated that the Buccaneers, Bengals, Lions, Vikings, Redskins, and Cardinals could be among the clubs to call on him.
Our recent list of the Top 50 Free Agents available left Mangold on the cutting room floor, but we did give him “honorable mention” status. Looking at the center market, Mangold probably won’t be as in-demand as the younger J.C. Tretter. Others with starting experience include Joe Hawley, John Sullivan, and A.Q. Shipley. Stefen Wisniewski, who mostly played at guard in 2016, also has experience in the middle.