You have to go back to 2018 to see the potential Chris Herndon has in 2020. He had 39 catches for 502 yards and four touchdowns. Not bad for a rookie tight end with a rookie quarterback throwing to him. The most impressive part of Herndon's game was his ability to get downfield which is usually a wide receiver's role.
Herndon played only 18 snaps in 2019 due to suspensions and injuries. He also is a Jet which should worry any fantasy owner about any of New York's players. It has struggled and that affects the skill players, even the ones with a positive track record.
2020 Bottom Line
Herndon was a potential break out candidate last season so that could carry over to 2020. He should get targets on a team that still has a weak receiving corp. His role in fantasy is a low-end TE2 so you he can probably be had in the late rounds for depth. Expect similar stats from his rookie year with a potentially higher ceiling than most backup tight ends.