Interesting choice to keep the color on the walls/window, yet remove it from your subject. Not something I'd normally like, I don't think, but it does seem to work here. Reminds me of days we'd sit on my grandparents' porch and cut beans or shell peas.
Overall nice shot. I like your post processing. Looking at it though, the bricks on the right pull my eye away from the man (main subject). Try cropping off the right bricks and you may find that this makes the image a stronger composition.
This guy reminds me of my old Uncle Charlie. Uncle Charlie was a good man who liked to play the harmonica. There was this one time he was playing his harmonica and you know who walked by? No? Me neither, but I do know that he said this to my Uncle Charlie; "You play that thing like an Angel" to which my uncle said "You're darn right I do you little sissy boy. Now get out of my face and let me play before I punch you right in your ugly kisser!" The man was so upset that he started crying right there. My uncle Charlie was so disgusted that he took his harmonica and threw it at the guy. Well, Uncle Charlie was a bad aim and he missed the crying sissy boy by about six feet. The harmonica went flying out into the street and a young boy by the name of Brucie Springsteen found it. He wiped off the slobber from my Uncle Charlie and started playing that thing like he had played his whole life. My Uncle Charlie listened in amazement at the young boy playing. Uncle Charlie walked up to the boy, put his arm around him and said "Boy, you've got real talent there. I see great things in your future, but if you don't take your nasty lips off my harmonica I'm going to break your little sissy boy nose. Little Brucie Springsteen was so shocked he didn't really know what to do so he just stood there. Uncle Charlie did what he said he was going to do and punched him right in the face. As he punched him there happened to be a cop driving by and my Uncle Charlie got arrested, but while he was trying to fight off the cop he said "You can't arrest me! I was BORN IN THE USA! BORN IN THE USA!" Little Brucie Springsteen heard this and... well, you know the rest of the story...