Tension remains high in the former British colony after rallies for free leadership elections blocked some of the city's major thoroughfares, ending in December when protest camps were cleared.
The Civil Human Rights Front -- an alliance of groups from political parties to student protesters -- said Monday that it would organise a march on February 1 through the city centre. The group coordinates regular mass protest marches in Hong Kong, usually held on January 1 and July 1, which have seen estimated crowds of up to half a million.
Chan was joined by pro-democracy lawmakers and other protesters to announce the rally to reporters at the city's de facto parliament.
The demonstration will end before midnight and Chan said she could not predict whether protesters would re-occupy the streets afterwards but would "respect" their decision to do so.
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A 14-year-old campaigner who had faced a police application to take him away from his parents after he was arrested at the clearance of one of the main protest camps, was also at the meeting and vowed to join the rally "without fear" as part of protest group Students Awaken.
The application for the care and protection order -- which sparked a backlash over the treatment of minors involved in the protests -- was withdrawn by police after one preliminary hearing.
A police spokeswoman confirmed they had been notified of the rally and would handle it within "existing mechanisms". Chan said the protest march had not yet been officially approved by police.