JPEG Background Removal Needed

I have a JPEG image that requires clean background removal while keeping the main subject crisp and natural. Please deliver the edited file on a transparent background (PNG preferred) plus the original-size layered PSD so I can make future tweaks if needed. Accuracy around edges, hair and fine details is important—no visible halos or color spill. If you use Photoshop, feel free to apply masks, clipping paths, or any other non-destructive technique that maintains maximum image quality. Quick turnaround appreciated; let me know how soon you can send the final files.