I don't think so.
Nassib was so bad last year that they brought in josh Johnson and made him the #2 mid season. Then Nassib got hurt and went on IR...and nobody signed him except for the saints late as a camp arm.
Despite not playing, Nassib had a fine career by lasting 4 years. I wish he got a ring behind Eli, but he learned from the best in TC and McAdoo, made some good coin and has a lot of stories as he heads off to his next life.
Geno, is the better backup for this team, he will have to run the scout team like a lot of teams QBs play now, has started 30 games and is better suited to finish up if need be.
No Eli, no season...but if he is to miss a few plays, quarter or God forbid a game...Geno is better option than Nassib.
We can probably find a better option than Geno, but that's a whole other topic.
And no kapernick is not 1 of them.