This image was shot at f/3.5 @ 35mm. The background is blurred, but I would not consider it a shallow depth of field.
This was shot at f/2.5 @ 85mm. This is a very shallow depth of field.
The buildings in the background are pretty easily distinguishable, and detract from the image. The DoF is not enough to isolate the subject from the background. Perhaps if you got closer to the subject and zoomed in as far as you could while using as large an aperture your lens has at maximum zoom, you could have got a more desirable effect.
The white streak by his left arm (a fountain?) is distracting, it would have been better if you'd worked the shot so it was hidden by his body, if you're any good in PS it could be cloned out. The red thing on the balcony behind his left shoulder is also distracting and could easily be cloned out. Considering the other factors, I wouldn't bother with any cloning, I'd take the advice above on board and reshoot.