Complex sentence: Lothar Herbert Matthäus, (born 21 March 1961 in Erlangen, West Germany) is a German former football player who is currently the head coach of the Bulgaria national football team.
Split into simpler sentences: Lothar Herbert Matthäus, (born 21 March 1961 in Erlangen, West Germany) is a German football manager and former player. Currently the head coach of the Bulgaria national football team.