Only if you have an adult female axanthic or het axanthic of the correct line. Buying an adult female het VPI and het TSK axanthic (the two most common lines) is going to be a very expensive way of 'proving out' a rescue animal.
Good luck with it, but please don't let it near your established animals again, no they can't catch scale rot but they CAN catch dozens of FAR worse ailments that you can't tell are there just by having the snake for a short while.
To me that snake doesn't look like an axanthic, just a sick ball python. Start worrying about its health before worrying about if it's a morph or not and breding it! If the snake has obvious external signs of illness then it could have far worse underlying problems.