IF canales were to give up play calling, it would most likely be internally with brad idzik who has no play calling experience whatsoever
now IF canales were to bring an outside candidate to call plays, would they be open to calling plays with canales' playbook? most likely, the outside candidate would like to bring in his own playbook, schemes, verbiage, and terminology. which means Bryce and the rest of the offense would have to somewhat learn a new system