The Saints are expected to sign quarterback Ryan Nassib, as Ian Rapoport of NFL.com tweets. Rapoport adds that the Saints have “always been high on him,” so they’re happy to have him in the fold. 
Nassib becomes the fourth quarterback on the Saints’ roster after starter Drew Brees, primary backup Chase Daniel, and Garrett Grayson. It would appear that the Saints are pitting Nassib against Grayson for the QB3 role, though it’s not a certainty that they’ll carry three quarterbacks on the final 53-man roster. If the Saints are planning on having just Brees and Daniel come September, then Nassib and Grayson could wind up as practice squad candidates for New Orleans.
Nassib was selected in the fourth round of the 2013 draft by the Giants, but the Syracuse product never got to make a start for the G-Men. Nassib received praise from Giants coaches for his work in practice, but the team didn’t try to re-sign him this offseason.
Last year, Nassib’s season ended early thanks to an elbow injury. At this stage, however, he is presumably healthy and ready to compete.