On July 30, 2021, Krejčí announced that he was leaving the Bruins and NHL to return to the Czech Republic to continue his career. Krejčí returned to his home country to play for the same team, which was his first as a junior and agreed to a one-year contract with HC Olomouc of the ELH on August 2nd, 2021. Bruins' general manager Don Sweeney has openly stated that the two sides have "left the door open" for a case in which Krejci would want to return to Boston.
David Krejci was named an assistant captain of Team Czechia for the 2022 IIHF World Championships currently taking place in Finland, and the host cities are Tampere and Helsinki. Czechia won their first game of the tournament over Great Britain 5-1 and lost this afternoon the Sweden 5-3.