Both players have physical skills but their production hasn't been consistent. I wouldn't want to pay either at TY's level. If Ballard and McD decide to bring Moncrief back I'm happy with that, I think he has the same approximate potential and skillset. Obviously Robinson had a better year in 2015 than Moncrief has ever come close to having but it's just one year.
I also saw this, both are expected to be tagged:
https://www.ninersnation.com/2018/1/...eceivers-49ers