ALLEN PARK -- Linebacker Zack Follett (concussion), wide receiver Nate Burleson (ankle) and right guard Stephen Peterman (foot) did not practice today (Thursday). None of the three have been ruled out for Sunday at Minnesota, but it looks unlikely for all three at this point.

Quarterback Matthew Stafford (shoulder) has been ruled out. He was on the practice field watching, not throwing.

Back at practice were safety Louis Delmas who missed Wednesday’s practice, linebacker DeAndre Levy, and defensive end Cliff Avril.

(Follow me on Twitter @PaulaPasche.)