Lions receiver Calvin Johnson is expected to make his preseason debut when Detroit hosts the Jacksonville Jaguars at Ford Field on Friday. Head coach Jim Caldwell says the team plans to let Johnson get some work in this week after he sat out the first two preseason games against Cleveland and Oakland. Johnson had surgery on his knee and finger in the offseason. Caldwell says he's not sure if defensive end Ziggy Ansah will be on the field against Jacksonville. Ansah was taken off the physically unable to perform list last week and was held out of last Friday's game against the Raiders.