Arsenal legend Pettit talked about Wirtz in an interview. He believed that Wirtz was not worth the 116 million pounds transfer fee, but he believed that Wirtz would succeed in Liverpool.
Pettit said: "The Premier League and the Bundesliga are completely different challenges. Leverkusen often plays defensive counterattacks, which gives him room to display. Liverpool controls the initiative in the game, and the tactical system is naturally different."
"Wiltz came to a new team culture and environment and faced a heavy challenge. Pressure. To be honest, although I appreciate his quality as a player, I don't think he is worth the transfer fee. I think some players will become victims of inter-club transactions. If you ask him face to face, he may say that he is not worth the price, but that is the reality."
"He carries a sky-high price tag. After signing for Liverpool, you have to prove yourself from the first game. Can you imagine the pressure? But that's the way it is, he has to step up and answer the expectations. "
"I understand that he needs time to adapt his technical characteristics to the Premier League. He is extremely talented, and I believe he will eventually succeed, but this requires more game experience and better understanding with his teammates. "
"The Premier League is not the Bundesliga, and Liverpool's tactical system is completely different from Leverkusen. "
After Wirtz joined Liverpool, he scored 0 goals and only received 1 assist in 10 games. During the same period, he only scored 1 goal in 4 games with the German national team.