Border Collie Puppy - Male, 12 weeks

I bought Joey when he was 8 weeks and he will be 12 weeks tomorrow. My older dog is starting to fully attack him so I really need to sell him. He is called Joey. A very lively puppy, he can sit, paw, lie down, come, drop and leave it. Mostly potty trained with the occasional inside if I don’t catch him in time. He really needs someone who can the time and patience. As he is not getting the life he deserves. Have a dog and 2 cats. He is slowy getting used to the cats. I have photos of his parents and original pictures of his litter mates. He will be fully vaccinated and is already microchipped. Feel very upset that I cannot cope with him :( Based in Llandudno.