Cornerback Chris Cook returned to practice Thursday afternoon, exactly six weeks after breaking his right arm in a Week 8 home loss to Tampa Bay. The following day, Cook was placed on injured reserve with designation to return, a new label that was implemented this season.

That move required Cook to be out of practice for six weeks following his placement on I.R.

With the designation to return -- which a club can only use on one player per season -- players are not eligible to play in a game until eight weeks after being placed on I.R. That means Cook's first possible action would come in Week 16 in Houston, which is the Vikings' current target date for his return.

"That's the goal," head coach Leslie Frazier said. "It was good to see him out here today moving around. We'll have to see how progresses."

Injury update

In other injury news, both running back Adrian Peterson and defensive end Jared Allen were given Thursday's practice off. Allen is listed on the injury report with shoulder and back injuries but is expected to return to practice Friday.

Peterson should be back on the field Friday too and was given Thursday's practice off as a means to rest, according to Frazier.

The Vikings who were limited in practice Thursday were Kyle Rudolph (shoulder), Jasper Brinkley (shoulder), Antoine Winfield (knee), Phil Loadholt (knee) and John Sullivan (ribs/knee).