Your player "best nightmare" is more like a sweet dream for your opponents... Well let's start properly, his price isn't 66T, that's the price you made, he was auctioned for 1T and 100+ millions, you cannot really say he is a player worth of 66 tokens.

Also the fact that he have 3 positions is quite useless as long as I guess you kept him all the time on the same position, more likely you played him as a winger I assume but indeed 9 games, 1 goal and 0 assists are very poor rates for his stats... My advice is, changing him if he keeps playing like this.

I remember many years ago I bought an MC and made him 7 stars at the same time and he literally killed my team, only 5,6 as note per game or even 4 despite he was one of my best player technically so I swapped him with a 5 stars player and my team got back in form.
Some of the player might played very bad despite they might look great.

Good luck!