[3][4] Although Neef was taken to Scotland initially by Eddie Turnbull, manager of Aberdeen, he was best known for his spell at Scottish side Rangers, whom he signed for in spring 1968.
The manager Davie White had been struggling to find a replacement to Billy Ritchie since his departure in 1967, using Erik Sørensen and Norrie Martin but not settling on either.
He made his debut on 19 April 1969 in a league match against Greenock Morton, keeping a clean sheet in a 3–0 home win.
The following season, he became first choice at the club playing 39 games and winning the 1970 League Cup, after keeping out Celtic F.C.
Neef left Rangers to return to West Germany in 1973, having made 48 appearances in total for the club.