Williams has a torn medial collateral ligament, partially torn anterior cruciate ligament and some meniscus damage. He is listed as doubtful for Sunday's AFC Divisional playoff game in Oakland against New York Jets. There is a better chance Williams will return to action for the AFC Championship game, should the Raiders defeat the Jets.
"I don't think that he'll be ready, but if it's possible to get him on the field by Friday, there may be an outside chance," Raiders head coach Bill Callahan said. "I just think he's still sore. I don't think he's going to be at full speed."
Williams sustained the injury on the Raiders final series in a 24-0 shutout over Kansas City on Dec. 28. Williams, who is sporting a brace, has also been playing with a turf toe injury in his left foot. Williams, who was a member of the St. Louis Rams' 1999 Super Bowl winning team, has regained some of the mobility in his knee and is able to do limited strength work.
"Football is a tough sport," Williams said. "I'm fortunate that I'm healing ahead of schedule. The swelling in the knee has gone down."
Williams will undergo surgery on torn ligaments in one of his toes after the season, but no surgery has been scheduled on his knee. Marcus Williams and Doug Jolley are the Raiders lone tight ends by trade that are at full strength. Oakland has been using 6-foot-8, 345-pound rookie tackle Langston Walker as an extra tight end in short yardage situations.
"We have a good contingency plan with our offensive linemen becoming tight ends," Williams said.