I just went through this with Whiskey - who is a fantastic mare who I really liked. She developed Sarcoids, which scarred her when we treated them - and left her unable to show at the level I compete. I was going to keep her forever, just because she was so darn nice that I couldn't fault her on anything other than her scars. I put the word out on my facebook page that she would be available to the perfect home ... the next day a woman who had bought my old show gelding many years ago messaged me and said she had been following Whiskey on my facebook page since I brought her home 2 years ago... and wanted her desperately for a local show horse, trail rider, and buddy. I sold her for 4 times what I bought her for, and am saving the money for a new lunge line prospect while working on Daisy, my current show prospect (and eventually my daughter's show mount).
So maybe your perfect home for him is with someone you know... wouldn't hurt to put the word out.
There is no passion to be found playing small - in settling for a life that is less than the one you are capable of living. - Nelson Mandela