Yes Chad Clifton is a 12-year pro and 35. The packers are holding him out alot this preseason to reduce the wear on his knees, but he is not a turnstyle at LT.
Its not 2009 and we are coming off a SB win with him as the LT starter. Backing him up is thrid year player T.J. Lang and rookie Derek Sherrod. The packer will be fine. The bears however if webb continues to be a turnstyle are in trouble because no plan B is in place other than a major resuffling of the line.