What I usually do in these cases is the following:
- Duplicate the Background.
- Select the problem part (in this case the red jumper) and with the selection still active, add a Layer mask .
- Create a blank Layer between Background and masked background-copy and set the blending of this new Layer to Color.
- With a soft brush (Opacity 30-60%), sampling colour from sorrounding areas, paint over the colour leak .... No need to be exact as the masked layer on top will keep a nice, clean edge.
I sounds very complex, but it is very easy and quick ... here
you can see another example of the same problem ...