I don't know how well any of Ron's noted quirks - clicking his heels, his hairpiece mishaps, any of his "catchphrases" ("OH GOSH!"; "gee whiz..."; "YESSSSSS") - lend themselves to a jersey patch and unlike Ron, Harry and Jack were both icons almost solely as broadcasters. In that vein, they could do something with a microphone to symbolize Ron's broadcast work, but I wonder if that might underrepresent his playing career in the process. All that said, I would bet on a generic black patch with a #10. Maybe over the heart instead of the sleeve.