Thuney (pectoral) is unlikely to be available for the Super Bowl on Sunday, Kevin Patra of the Chiefs' official site reports.
Head coach Andy Reid said it's a long shot that Thuney practices this week as he is still recovering from the strained pectoral he suffered during Kansas City's victory in the divisional round. If the 31-year-old can't suit up versus the 49ers, Nick Allegretti should get the start at left guard for the second consecutive game.