Yes. Opponents friend you to learn your schedule and schedule friendlies to tire your players before important games.
Friends who dont know any better schedule friendlies for fun without knowing that you are prepared for a game and now you caused them to lose that game because you tired them out.
Nordeus benefits from this because you have to buy green packs to fix yourself after you lose all your condition after the unwanted friendly.
Nordeus benefits from this because you have to buy red packs to fix yourself after they get injured in the unwanted friendly.
Nordeus benefits from this because you have to buy tokens to buy the red/green/blue packs when you run out of them after so many unwanted friendlies.
Please show me where the manager benefits from not being able to automatically decline unwanted friendlies. Please