Marleau announced his retirement from the NHL on Tuesday, per The Players' Tribune.
As expected, Marleau (lower body) will play Wednesday versus Colorado.
Marleau is expected to suit up against Colorado on Wednesday despite dealing with a lower-body issue, Sheng Peng of San Jose Hockey Now reports.
Marleau tallied a goal on his only shot in a 5-4 win over St. Louis on Saturday.
Marleau posted an assist and two PIM in Thursday's 3-2 overtime loss to the Blues.
Marleau recorded an assist in Tuesday's 4-3 shootout win over the Kings.
Marleau signed a one-year, $700,000 contract with the Sharks on Tuesday.
Marleau scored his 11th goal of the season in Sunday's 6-2 loss to the Hurricanes.
Marleau garnered an assist in Thursday's 7-3 win over the Senators.
Marleau was brought in by the Penguins from the Sharks in exchange for a 2020 third-round pick Monday, Josh Yohe of The Athletic reports.