Greer logged an assist and three hits in Friday's 6-4 win over the Stars in Finland.
Greer signed a two-year, $1.7 million contract with Florida on Monday.
Greer produced 12 points and 100 hits over 59 contests in 2023-24.
Greer notched two assists and went plus-2 in Saturday's 4-2 loss to the Canucks.
Greer (foot) was activated off injured reserve Saturday, per Wes Gilbertson of the Calgary Sun.
Greer (foot) was placed on injured reserve Sunday, per CapFriendly.
Greer will be out for eight weeks with a fractured foot.
Greer is expected to miss a considerable amount of time after suffering an ankle injury Thursday, Eric Francis of Sportsnet reports Friday. The forward might need surgery, but that hasn't been determined.
Greer (illness) is good to play Saturday versus New Jersey, per Pat Steinberg of Sportsnet 960 The Fan.
Greer (flu) isn't at morning practice Friday.