McCown passed 539 yards, a touchdown, and four interception across three starts in 2018.
McCown failed to complete his lone pass attempt in Sunday's 27-23 win over Buffalo.
McCown is slated to serve as the Jets' No. 2 quarterback Sunday against the Bills with Sam Darnold (foot) cleared to reclaim the starting role, a source told Brian Costello of the New York Post.
McCown (back) practiced fully Friday and doesn't carry an injury designation into Sunday's game against the Bills, Rich Cimini of ESPN.com reports.
McCown (back) was limited at practice Wednesday, Rich Cimini of ESPN.com reports.
McCown completed 17 of 30 passing attempts for 128 yards, no touchdowns, and an interception in Sunday's 26-22 loss to Tennessee. He also rushed once for three yards.
McCown will receive the start for Sunday's game against the Titans, sources tell Rich Cimini of ESPN.com reports.
McCown completed 26 of 45 passes for 276 yards, one touchdown and one interception in Sunday's 27-13 loss to the Patriots. He also rushed three times for 25 yards.
With Sam Darnold (foot) ruled out, McCown will start at QB for the Jets on Sunday against the Patriots.
McCown will open the season as Sam Darnold's backup.