Career
He has played 3 international matches for Sweden national football team, and was a squad member in the Union of European Football Associations Euro 2000. Asper was the first choice goalkeeper for Mjällby AIF in four seasons before signing to the Allsvenskan side AIK in. Lee Baxter began the season as the first choice.
On the 8 of June, Asper made his debut against Östers IF putting Lee Baxter on the bench, which would last for the rest of the season.
In, AIK qualified for Champions League making it all the way to the group stage. This year, Asper held a clean sheet for 797 minutes in Allsvenskan which was a new record.
His performances in AIK attracted interest from Spanish club Real Sociedad, who bought him just before the 2000-2001 season. However, he did not had much of a success in Spain and eventually returned to Sweden and in 2002, after being on loan to Beşiktaş J.K. Club AIK Individual.