Possible, but history is against you on this one. Can't really guess at who won't make the roster, but I think it's likely that at least one doesn't. If I had to pick one, I guess I would say Howden. But hey, who knows? Maybe all 7 make the team. THAT alone would make this one of our best draft classes.
I wouldn't be surprised at all to see Howden getting serious reps in the slot throughout the season - the same position Gardner-Johnson played. He's a very similar type of player.