Rob Gronkowski - TE - Patriots
Rob Gronkowski (back surgery) has attended most training camp practices in street clothes.
Players that are active/PUP usually dress out so they can do rehab. Gronk's attire proves he's not even at that stage of his recovery yet. We have to follow clues like this because both the Patriots and Gronkowski himself are refusing to talk to the media about his progress until he is activated. Beat writer Ben Volin says the "likeliest course of action" for the franchise will be to keep Gronk on reserve/PUP, meaning he'll be inactive for the first six regular season games.
Source: Boston Globe Aug 4 - 12:11 PM