In 1985, he was purchased by Malmö FF, being mostly used as a substitute in his early years[1] and being on the roster as the club won five Allsvenskan championships in a row, with the player contributing regularly in the 1987 and 1988 editions.

In the summer of 1989, Ljung transferred to BSC Young Boys in Switzerland, moving in the following season to another side in the Swiss Super League, FC Zürich.

In the 1994 World Cup in the United States, Ljung opened the national team's scoring account in a 2–2 group stage draw against Cameroon.

He brokered his deal with Arsenal for a £3 million transfer fee, and the pair parted ways in December 2006 when the player signed with mega-agency Creative Artists.

[7] Other players Ljung worked for included Marcus Allbäck,[8] Patrik Andersson,[5] Erik Edman,[9] Andreas Isaksson,[10] Kim Källström[11] and Teddy Lucic.