The news is perhaps disappointing for fans hoping Hackenberg would seize the starter's job. At some point, the Jets will need to find out what they have in Hackenberg. If he had earned the starting gig and played well this year, the team could have addressed other needs in free agency and the draft next year.
If he struggled along with the team, however, the Jets could turn to a strong 2018 draft class to address the position.
Instead, they remain in limbo, though the fact that Hackenberg couldn't win the starting gig out of the gate suggests he may not be the future of the position.
McCown, 38, most assuredly is not the future of the team. He's a solid enough option to have in the present, however. The veteran appeared in five games for the Cleveland Browns last year, throwing for 1,100 yards, six touchdowns and six interceptions.
For a rebuilding Jets team, McCown is simply a stopgap, either between Hackenberg or another quarterback the team drafts in the future. It would be surprising if the team didn't give Hackenberg the opportunity to start at some point this year.