Henderson will be largely a sub at the beginning of the season. I say that expecting a starting central midfield consisting largely of Lucas, Gerrard, Meireles, Aquilani and Adam. If his performances challenge any of these, he may get a starting slot. With Gerrard past 31 and Meireles in his late 20s, Henderson is a signing potentially mor for seasons to come than right away.
Having said that, he may well get more chances on the right, alternating with Kuyt.
In other words, I tend to agree with you Zaffarious.