Everyone’s sentiments so far are pretty much the same and my thoughts coincide with theirs. Do not rehome him. Dispatch the bird now as something
will happen. As Barney Fife would say, “Nip it in the bud!”
I went through many many cockerels until I found the right one. He is #13 to be exact. He is a Welsummer over a Barred Rock cross and is the cockerel I’ve always wanted. Now granted he is only 7 months old and things can still change, but I’m hoping for the best.
As others have noted, I too kept my first aggressive male way too long. He was about 13 months old when I finally processed him. I really wanted him and just had to see if he got any better after he turned a year. Nope. The first cockerel I processed was a mere 13 weeks old.
IMHO, the biggest reason my current cockerel has turned out decent, so far, is because he was raised by a flock of 21 older hens. He didn’t have time to give me a second look and contemplate flogging me. I’m telling you, they kept that poor boy on his toes and always on the run. It seems he has grown up with more respect because of that and he has since earned most of the girls’ respect. He’s still working on my oldest three OG’s.

(OG = Original Gangsta hens)
He has now brought the 12 newest pullets into the flock. They are “goo goo” over him and should all be laying within the next few weeks. I’m sure the older girls don’t mind a bit.
I know there’s a ratio of 1 male to ~10 females, but every single egg I’ve cracked is fertile. And my ratio is 1 to 37. May be another reason he doesn’t bother me, you reckon?
I have gone against conventional wisdom just a tad by hand feeding him treats
first and letting him call the girls over. He is as gentle as can be when taking treats out of my hand. Some of my girls will pert near take a finger off!

Every evening, on the roost, I will pet him and scratch his comb and wattles while I talk to him telling him how thankful I am for him. Stupid I know, but hey, whatever works. I secretly thinks he
loves the attention, as his girls can’t see! As he was maturing, I always kept a hand on him. Everything I had read said not to handle the males after you realized they were cockerels, but I had followed those rules with most of the other 12 cockerels to no avail so I thought what the heck. I’m just gonna follow my own instincts/gut and go from there. I mean, what’s one more “cock in the pot.” There for a while my crock pot was nicknamed the “CockPot.”
The only draw back with him is he is a mixed breed so I cannot use him for breeding my purebred hens; however, he will produce some meat and eggs for our table and that’s a plus.
Later on I hope to find a
good purebred rooster to breed with.
Good luck finding a good boy. I know you will, I promise.