Michael Ballack calls Florian Wirtz's move to Liverpool "insane," highlighting its significance for a young star.

Wirtz's transfer shocks fans, marking a big step in his career and Liverpool's push for fresh talent.

Ballack warns Wirtz to face reality and handle the pressure of playing at a top club.

He advises Wirtz that "changes are needed" — in his game, mindset, and mental toughness.

Experts see potential for Wirtz to grow but note the challenges of Premier League demands.