I would go to see him if I were you. It may be love at first sight. I have 2 cockers, Bess, who is now 12 years old, she was 6 months old when we got her. She was difficult for the first few months, it's hard taking on a puppy of that age, but they do deserve loving homes so don't let the difficulty put you off. My other cocker is Dillon who is 5 years old. I got him in March of this year. I don't know the full story of his past but he is the most loving dog I could ever wish to have, he absolutely adoresme & that is soooo flattering. He has a few behavior problems (he's aggressive with other dogs) but I'm working on it.
What I'm trying to tell you here is that rescue dogs are very very worthwhile & this one that you're thinking of getting is a rescue dog, although he's not in a kennel, his owners are parting with him & rehoming him is a kind of rescue.
My advice is let your heart tell you what to do. Good luck