Not sure why the name them scout but they are the best players your team (at any level) would be able to purchase. They do show in your jersey as they are free agents and it give you an idea what they would look like in your colors but you still need to purchase and pay 50 tokens. Depending on your goals, scouts could be good or not. If I were to do it all over again, I would just purchase young layers and power train them and they would become better than the scouts and cost less.
Hope it helps!