Matthaus, a renowned football expert, believes Diaz has proven his skills in the Premier League. He is quick and powerful in his duels, giving Bayern more options in attack. Diaz has played various positions, including left winger, central midfielder, and second striker, at Liverpool.

Matthaus understands the need for Bayern to invest in top talent to remain competitive. He notes that Diaz will earn a significant salary in Munich, which is a factor in the club's decision to sign him.

However, Matthaus also compared Diaz to Nick Woltemade, a young striker from Stuttgart. While Diaz is 28, Woltemade is 23 and costs significantly less. Matthaus questions why Bayern would pay €75 million for Diaz when they could have faith in Woltemade, who is five years younger.