Thinking about this, I don't think that he does. He was in The Defenders for quite a while, but are him and the Surfer close? Is he close with Strange? He can't be that close with Namor. I think it's the same with The Avengers. How close was he to Steve? Didn't Tony and him have a bad history? I really can't think of any other friends that Bruce has. Peter and the Torch have a long and close friendship, Peter and Daredevil are good friends. Does Bruce have anything like that?
There was also Fred Sloan introduced during Roger Sterns run in #231