Giants Trade For J.J. McCarthy: What Does It Mean For Present, Future Of QB Room?

Rookie Jaxson Dart will miss the rest of the regular season with a knee injury, so Jameis Winston is the current starter.
The Giants traded for J.J. McCarthy as insurance — Harbaugh said Winston did what was needed, but McCarthy could push for the job once he learns the playbook.
Long term the team still views Dart as their QB of the future; Winston is likely a veteran backup and McCarthy could become depth or a tradeable asset.