Rattler is the heir apparent, he's the guy we build the team around....we have a QB with Carr and Rattler, build this team up and these QB's will thrive.
All three QBs are under contact, you lose nothing by bringing them all back, unless you acquire a better option in the time between now and training camp.
But this team needs to be actively seeking better options, like any team to be fair, because we're not seeing consistent production from anyone currently on the roster. Hopefully that changes soon, whether it's with these players or others.