One of the big stories to watch in the coming weeks for the Detroit Lions is what happens with running back Jahvid Best. He will be eligible to be activated from the PUP list as early as next week, but his status will ultimately come down to whether or not doctors clear him for contact.
Best is not the only player waiting to come off the PUP list. Cornerback Chris Greenwood will also be eligible to be activated next week. He had offseason surgery that kept him out of training camp and the preseason and put him on the PUP list, but there's no reason to think he won't be healthy enough to return if that's what the Lions want.
The interesting dynamic with Greenwood is that he hasn't had a whole lot of time to practice with the Lions because he is a rookie. Having surgery and going on the PUP list has limited his development, and although players coming off the PUP list can practice for three weeks before they are activated, that doesn't necessarily mean they will in fact be activated. The Lions could decide that Greenwood simply isn't ready to contribute and put him on injured reserve, shelving him for the rest of the season and essentially making this a redshirt type of year for him.
While it remains to be seen if Greenwood can contribute on defense, he could convince coaches to activate him to the 53-man roster if he does well on special teams. Specifically, if he shows more than Jonte Green has on special teams, I could see the Lions quickly activating him during that three-week window. Green has struggled on defense and special teams, and perhaps an inexperienced Greenwood would still be a bit of an upgrade.