The 38-year-old Manning is entering the final year of his contract, which pays a base salary of $11.5 million, and the Giants could actively seek an heir-apparent in the upcoming draft.
Manning recognizes he could share the quarterback room with his eventual replacement, but he isn't fazed by the situation.
"I figure the Giants are going to get a young quarterback," Manning told reporters during a Monday teleconference. "I understand that. I've got to do my job and I'll do my part. My job, as I see it, is to go out and play quarterback and win football games."
Securing victories has been an issue for the Manning-led Giants in the past two seasons given New York is a combined 8-24 over that span. Not all the blame falls on Manning, of course, as he's had to work behind a patch-work offensive line and comes off a season where he was sacked a career-high 47 times in a single season.
Murray, Haskins and Lock are widely regarded as potential franchise quarterbacks worthy of a first-round pick. The Giants currently own the sixth-overall selection, which puts the team in a good spot to grab a quarterback of the future.
In the event the Giants elect to grab a quarterback sooner than later in the draft, Manning will find himself potentially pulling double duty. The first surrounds his desire to get the team wins, while the second will fall on acting as a mentor to his eventual replacement.