Born in Vordingborg, Morten Olsen started playing youth football at the local club in 1957. He started his career playing as a right winger. In 1970, at 20 years of age, he was brought to B 1901 in the top-flight Danish 1st Division championship by coach Kurt "Nikkelaj" Nielsen.Lundberg (1988), p. 37 At B 1901, Olsen was moved from right winger to central midfielder, in order to accommodate another right winger in the squad.
