No, it isn't. We paid 22.8m for Amauri, not 15.3m. If we bought him for 22.8m and sold Nocerino e. g. to Napoli for 7.5m, you would still have said we paid 15.3m for Amauri?

The same goes for Lanzafame, no matter how mch we will get for half of him, we paid for Amauri 22.8m.