Simplify the following text for a Grade 5 native English-speaking person.
Original: Rudolf ` Rudi ' VÃ ller ( born 13 April 1960 in Hanau , Hesse ) is a German former international football striker , and a former manager of the German national team .
Simplified: Rudi VÃ ller ( born 13 April 1960 ) is a former German football player .