Sao Paulo midfielder Lucas Moura has admitted he has doubts over his big-money move to Paris Saint-Germain in January.
Moura, 20, will be PSG's next marquee signing when he joins them in the upcoming transfer window for a fee of €45 million.
However, despite the French club's willingness to splash out on the Brazil international, he has revealed he is unsure as to whether he will prove value for money.
"Thiago Silva has told me a lot about the club and its facilities, and it will be nice to have him as my teammate," he told Canal.
"However, I have to admit that I do have a bit of fear about how things will pan out. I don't know how well it will go."
Moura is believed to have signed a contract that will put him on €250,000 a month but the playmaker has denied money was the reason behind the move.
"I am not thinking about money, but I am more concerned with whether my next destination will be the right one," he said. "PSG's ambition and the presence of the other Brazilians convinced me.
"I am following PSG from a distance. I am mainly focusing on the end of the season with São Paulo."