 The following season he was part of an infamous and extremely lopsided trade when he was traded by the Blues to the Ottawa Senators for Pavol Demitra.Demitra eventually became a scoring powerhouse with the Blues for a number of years while Olsson decided to go back to Sweden to play hockey after his short stint with the Senators that year.Olsson played 7 more years in Sweden and one in Austria before retiring after the 2004–05 season.