Following rumors that he intended to retire from professional football after one season, Leemans signed a contract in August 1937 to return to the Giants. During the 1937, Leemans did not have the same level of success as in 1937. Hank Soar took over as the Giants' leading rusher in 1937, and Leemans gained only 429 rushing yards, roughly half his total from the prior year. Despite the reduced offensive output, Leemans continued to garner credit for his overall play and was selected by the NFL and the "New York Daily News" as a second-team player on the 1937 All-Pro Team.