Hoffenheim midfielder Lukas Rupp is worried about the rising transfer fees being paid in modern football.
Just one year after Paul Pogba's €109 million move to Manchester United, the then-world record has been beaten three times.
The last transfer window saw Neymar become the world's most expensive player with a €222 million move to Paris Saint-Germain, who also signed Kylian Mbappe in a deal that will cost them €180m. Meanwhile, Barcelona signed Ousmane Dembele from Borussia Dortmund for a total of €145m.
Neymar 12/1 to be CL top scorer
Collectively, Premier League clubs spent more than double than any of their European counterparts in another record-breaking summer.