Simplify the following text for a Grade 5 native English-speaking person.
Original: Raymond Kopa ( born Kopaszewski , on October 13 , 1931 in NÅ `` ux-les-Mines , Pas-de-Calais ) , is a former French football striker , integral to the French national team of the 1950s .
Simplified: Raymond Kopa ( born 13 October 1931 ) is a former French football player . He has played for France national team .