"Fine with it," Manning said Monday, per ESPN.com's Jordan Raanan.
The Giants took Daniel Jones sixth overall last month, although Manning appears likely to remain the starter going into Week 1.
The veteran also noted he won't have any trouble helping the rookie considering he's been filling a similar role for a long time.
"I've been doing that for the last 11 years, 12 years," Manning said. "I don't know when you become a mentor, when that is official. When you've been in the league longer than any other guy in the quarterback room, you should be a mentor in that sense where you know a little bit more."
New York drafted Andre' Woodson (2008, sixth round), Rhett Bomar (2009, fifth round), Ryan Nassib (2013, fourth round), Davis Webb (2017, third round) and Kyle Lauletta (2018, fourth round) in the past, although none were taken in the first round, and many were viewed as backups at best.
As Manning explained, the challenge will be on Jones to learn as much as he can: "It's a little bit on Daniel being in there, listening, asking questions and everybody willing to help out in those situations.
Even with just eight wins over the past two years combined, the 38-year-old Manning remains the team's QB1 during offseason workouts.