I agree with Karin’s comments. My suggestion was made on the assumption that you have collaborated on NUMEROUS clients, respected each other’s work and wanted to enter into a partnership. How you choose to do it depends on you and your partner. But a client’s needs should always come first. Don’t refer someone to your buddy physical therapist, dietician, etc., if you know they really don’t need to see this person or they won’t be able to help their situation. Doing so would diminish your credibility as a trainer and make you come off only caring about receving referral bonuses and not caring about the client’s needs.