Chapman returned to Leeds City from Barnbow after hostilities had ended, but resigned suddenly in December 1918, eventually moving to Selby to take up a position as a superintendent at an oil and coke works. No reason was given for his resignation, but as football resumed in 1919–20, Leeds City were accused by a former player of financial irregularities, involving illegal payments to guest players during wartime matches. No documentary evidence was produced, but Leeds' refusal to allow the authorities access to their financial records was deemed a sign of guilt, and they were expelled from the Football League in October 1919 and five club officials, including Chapman, were banned from football for life. The club was dissolved, with the players auctioned off and their Elland Road ground taken over by the newly formed Leeds United.