“Well, we definitely do have a budget allocation for this but I think it’s best if you talk to Barbara Delaney, who is looking after this project. She’ll be your main point of contact and will look after the detailed design for you. Is that it?”

Make clear that design is your responsibility but you will be pleased to liaise with Barbara about the technical content
Thank George for all his help and make clear you will be pleased to work with Barbara as designer