Conversation so far:
What is CSKA?
CANNOTANSWER.
What did he do with CSKA?
professional hockey.
Did he win?
His individual success helped CSKA Moscow capture their thirteenth consecutive Soviet championship and twelfth consecutive IIHF European Cup in 1989 .
Did he receive any special recognition or awards?
Bure added 9 assists for 26 points to earn the league's rookie of the year honours.
What was he doing in 1991?
Bure turned down a three-year contract extension in August 1991, which resulted in him being left off the roster of the Soviet team for the Canada Cup.
Did he have any injuries?
CANNOTANSWER.

Question: What is significant during this time?
Self-contained rewrite: What is significant during August 1991?