I think kids attach to therapists, but not in the same way adults do. Therapy at a young age should not be hard work (unless there are behavioral issues and he needs charts/ reward systems). therapy had to be fun or children won't want to go back. Plus he's young to do talk therapy so it's more likely the T will just try to engage him through play. He may also serve as a positive male figure for your son to interact with. If he connects with your son ", he may learn more about how his relationship with his dad is affecting him.

So to answer the question about attachment, I don't think you need to worry. Your son won't be interaxtig the same way you do with your T, so while a connection will be made, I don't think it fosters the kind of attachment you sometimes see with teens and adults.