How does that explain the green on his neck? Looks more like the Jersey color was changed and the face was turned green so he erased it which is fine except some got left behind.
If this is the case, for future reference, just clip a hue/saturation to your render and only adjust the color channel you need. If you take the drop down off master and switch it, in this case, to blue it'll adjust only blue colors which would do the job here. Red is the only real tricky one since the face has a lot of red hues.