Following a standout career at Overton High School in Memphis, Neumann took his game to the University of Mississippi, where he played from 1969 to 1971.

[7] However, Neumann gradually fell out of favor with the team's head coach and management, who thought he was not passing the ball enough, and he was traded by the Memphis Tams to the Utah Stars, in exchange for Glen Combs, Ronnie Robinson, Mike Jackson and cash, in January 1974.

In August 1974 the Stars traded Neumann and a draft choice, to the Virginia Squires, in exchange for Jim Eakins and Larry Miller.

[6] In January 1976, Neumann was traded along with Jan van Breda Kolff, to the Kentucky Colonels, in exchange for Marv Roberts.

Neumann also coached in Belgium, Greece, Cyprus, Israel, Kuwait, Lebanon, Saudi Arabia, China, and Japan, as well as in the American minor-league Continental Basketball Association with the Maine Lumberjacks.

While in Cyprus, he discovered Darrell Armstrong, a little-known American point guard from Fayetteville State University, who later found success in the NBA.

After graduation from Ole Miss with a bachelor's degree in general studies, he hoped to obtain a position as a professional sports analyst and broadcaster, but those opportunities did not materialize.

In spite of surgery, Neumann died in Oxford, Mississippi, on April 23, 2019, after struggling against brain cancer.