I don't think so. I think Ferrari learned their lesson and will no longer give even their star driver any say in who the other driver is. I don't see it. Ceding a management decision like that doesn't seem to be at all what Marchionne or Arrivabene are about. If they want Ricciardo, they will get Ricciardo, regardless of what Vettel thinks. I'm also not so sure Ricciardo and Vettel wouldn't get along unless one of them started to run away with the points.
It's easy to be picky when you're winning championships, but Ferrari is very much a 'what have you done for me lately' team. To even consider a veto, Vettel would have to have won them at least 2 championships for Ferrari. (Certainly one wasn't enough for Kimi to stick around.)