Mueller earned his coaching licence in 1992 and became head coach of the reserves in 1995/96. He helped nurture current Germany star Thomas Mueller, who was no relation, at Bayern.
Who is Thomas Muller father?
What happened Gerd Muller?
On 6 October 2015, it was announced that Müller was suffering from Alzheimer’s disease. He died on 15 August 2021 in a nursing home in Wolfratshausen, aged 75.