KB twice tried to run a professional football business in the 1980s, but on both occasions the club failed to gain enough financial support.
Following the club's last Danish championship win in 1980, KB ran dry with football success at the highest level.
[1] KB was therefore happy to have a team playing professional football, while B1903 had a good squad but a doubtful future, when it was clear that Friedmann was unable to guarantee his support for much longer.
The first ambition of the club was attaining a high enough placing in the Danish Superliga, as to qualify for one of the European competitions every season.
This goal was to be reached through a solid economy build upon a big fan base, and through an "attractive and positive style of football".
FCK also competed in the UEFA Intertoto Cup and they won their group after 4 wins, 1 draw and a single defeat.
In the Cup, FCK was knocked out in the semi-finals by OB with 1-4 agg., after in the 5th round eliminating defending league champions Brøndby and Hvidovre in the quarter-finals.
In front of a record high attendance (26,679[2]) FCK won the match 4–1, but lost the championship after a 3–2 defeat in the last round.
After a very disappointing autumn, with elimination in the UEFA Cup by Slovan Bratislava, they went to the winter break in 7th place.
After the weak season the team won the Cup final against AB with a superior 5–0 win, qualifying for the European football once again, despite the otherwise mediocre results in the league.
In the new season, FCK got a new CEO and Chairman, Flemming Østergaard, lovingly referred to as Don Ø by the club's fans for his mafioso-like antics, and a new manager, Kent Karlsson.
After a 10-0 (over two legs) victory against Azerbaijani FK Karabakh and 6–1 against Bulgarian PFC Levski Sofia, FCK was going to face Chelsea F.C.
After a dramatically 1–1 on Stamford Bridge, Chelsea won the second game at Parken - a goal scored by the Dane Brian Laudrup.
He took over after Hodgson who broke his contract with FCK a few weeks after celebrating the championship signing the Italian side Udinese.
After a goalless match at Parken, FCK won at Amsterdam ArenA 1–0, after a goal by left back Niclas Jensen.
Archrivals Brøndby won the championship on goal difference after FCK had caught up with Brøndbys 10 point lead in a half season.
On top of that FCK lost in the cup final to OB, who had been sent home from Parken with 0–4 defeat a few weeks earlier.
In the Champions League second qualifying round 2004-05 FCK won the first match against ND Gorica 2-1 but later lost, in a sensational defeat, at Parken with 0–5.
Copenhagen won the inaugural Royal League tournament in 2004-05, after tying IFK Göteborg in the final 1-1 and beating them in a penalty shootout, 12–11.
In the 2006–07 season, Byens Hold played in the Champions League qualifiers, with reinforcements as Jesper Grønkjær, Oscar Wendt and Fredrik Berglund ousting Dutch team Ajax Amsterdam.
FCK has also won the Royal League, the Scandinavian championships, both seasons this two-year-old tournament has been played.