TAMPA — The road to recovery just got longer for Cadillac Williams.
The running back was placed on the reserve physically unable to perform list Tuesday as the team reduced its roster from 80 to 75 players.
Williams, who tore the patellar tendon in his right knee in September, won't be eligible to be activated for at least six weeks.
The Bucs released four players, including injured LB Antoine Cash (neck), CB Sammy Davis (hip) and S Donte Nicholson (knee).
WR Paris Warren, who dislocated his foot in the 2007 preseason, also was released.
Cash injured his neck in Saturday's 23-17 loss to Jacksonville when he collided with CB Marcus Hamilton, who suffered a hip pointer on the play. Both would be placed on injured reserve if they clear waivers. Davis is not subject to waivers and was placed on IR.
Williams can't practice with the team while on the PUP list. The move is not a surprise given the seriousness of his injury and a crowded backfield that includes Earnest Graham, Warrick Dunn and Michael Bennett.
Warren, a seventh-round pick in 2005, was a somewhat surprising cut from a large group of receivers that includes long shots such as Cortez Hankton and Brian Clark.
The Bucs play their final preseason game Thursday at Houston (8 p.m., Ch. 8; 103.5-FM, 620-AM). Teams must reach the 53-man roster limit Saturday.
"We feel good about the fact we've given players an opportunity to compete and showcase their skills in the three preseason games that we have had," coach Jon Gruden said. "I'm very appreciative and very impressed with the work ethic that we do have."
COURTING AN OT: Former Bears OT Fred Miller worked out Tuesday morning in Tampa and was weighing a contract offer. Miller, 35, released in February, also has been offered a one-year, $830,000 deal to return to Chicago. The 6-foot-7, 314-pound Miller played 12 seasons with the Rams, Titans and Bears. ''He had a great meeting with Gruden but we are not going to do anything until we hear from Chicago," Miller's agent, Harold Lewis, told the Chicago Sun-Times. Also Tuesday, the Bears released DB Ricky Manning, whose kick-return abilities might interest the Bucs.
BUCS BITS: WR Joey Galloway practiced at full speed for the second straight day. … Gruden said he has not decided on his QB rotation for Thursday's game. Jeff Garcia has taken increased reps the past two days.