With the Black Hawks Allen became a regular everyday player, and was fifth in team scoring in his first season.[5] His best season ranking-wise with Chicago was 1940-41, when he ranked second, and third in the playoffs.[6] Allen's best season production-wise was 1943-44, when he scored 41 points, good for fifth on the team, and was third in playoff scoring, as Montreal swept Chicago in the Stanley Cup final.[7] Allen missed the 1944–45 NHL season due to the National War Labour Board restrictions on crossing the Canada–US border.[1] He played one more year in Chicago, and ahead of the 1946-47 NHL season Allen was traded to the Montreal Canadiens, for Paul Bibeault, with both teams holding "right of recall".[1] After the season, the players were returned to their original teams, but after a couple of seasons in the minors, Allen never played in the NHL again.[1][8] Allen went on to spend one season as a playing-coach during the 1950–51 season with the Regina Capitals.
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