Judging by this 2015 video, it appears Atiku would not be relying on Obasanjo’s blessing for his presidential ambition come 2019.
Answering a question on why he did not support Atiku to be president after his term, the former president replied
“With what I know about Atiku, if I had put Atiku forward, God would not have forgiven me”
With such strong words, we can assume that he has not un-known what he know about Atiku and is still reluctant to support his come 2019.
However the Atiku camp might be buoyed by the lack of support from Obasanjo based on the historical outcomes of his recent choices: Yaradua, Jonathan and Buhari.