Johnson signed a two-year contract with the Giants on Friday, Ian Rapoport of NFL Network reports.
The Giants could look to address their quarterback depth in the 2017 NFL Draft, but as things currently stand, Johnson or Geno Smith looks in line to serve as Eli Manning's top backup. The 30-year-old Johnson brings a mobility to the position that Manning lacks, but he hasn't logged a snap in a regular-season game since the 2013 season. Fortunately for the Giants, Manning is about as durable as it gets, so Johnson's lack of reps the last few seasons shouldn't be a major issue.