Simplify the following text for a Grade 12 native English-speaking person.
Original: Koivu served as the Canadiens ' captain for nine of his thirteen seasons with the club ( not including the locked-out 2004 â `` 05 season ) , which makes his the second longest captaincy tenure in team history after Jean BÃ liveau .
Simplified: Koivu served as the Canadiens ' captain for nine of his thirteen seasons with the club , which makes his the longest captaincy tenure in team history tied with Jean BÃ liveau .