We wont know yet. If Nassib was drafted in like 2016, it would make sense to me. but it's too early. Eli still has many seasons left. Nassib is a bargaining chip I think. So yes, it will likely be a future draft pick we'll get. Every team deals with this. I'm not sure why youre thinking about this right now.
I am just saying,
I would trade an experienced, good, old QB for a younger stud, good, QB.