Following a short period as manager of Swedish side IFK Västerås, he returned to join Bill McGarry, now at Wolverhampton Wanderers, as his assistant. As part of the management team, they guided Wolves to victory in the 1974 League Cup. The club were relegated in 1976 and McGarry departed, leaving Chung to be appointed manager.
He won promotion back to the top flight as Second Division champions in his first season. He led the club to a 15th place finish in 1977–78, but the following season began with a run of 11 defeats in 14, leading to his dismissal following protests from the club's fans.
After a period coaching in the UAE, he returned to England in 1985 as assistant manager of Stoke City. He had a spell as manager of non-league side Tamworth between January 1992 to January 1993, before being appointed manager of Doncaster Rovers in July 1994, a post he held until August 1996. His Doncaster spell brought two promising seasons on the field, but promotion challenges gradually petered out into mid-table finishes.