A new catcher must be acquired.
Rank the catchers in order of preference based on consensus requirements (Length of contract, AAV, ability, age, etc.)
If AJ is the best they can get, sign him. If they can get somebody better, sign them. Leave any emotions out of it. I'd love to have him back, but I'd rather have one of the better options.
What is Mind? -- Doesn't Matter!
What is Matter? -- Never Mind!