Patients should be able to freely discuss any topic that is troubling them with a counselor. This is especially the case for minors. If it is the will of the patient to seek counseling that helps them understand the roots of unwanted attractions or gender confusion, they should be able to do that with a skilled counselor. 

Do not put in place this wrong prohibition that will cause lasting harm to those seeking mental health counseling.

I have known individuals who sought counseling for their attractions but did not frame it as "conversion therapy" and found lasting help to understand their attractions and live in peace with it. Do not deny future patients that opportunity.