White started in Game 1 for Boston and posted three points on 1 of 4 shooting with four assists and a block.
The 27-year-old is expecting a child according to the report, which is the reason he’ll be out tonight in Miami.
Horford missed Game 1 after entering health and safety protocols, and he was originally listed as unlikely to play in Game 2.
However, the veteran has been upgraded to questionable for the contest, which is good news for the Celtics who are down 0-1 in the Eastern Conference Finals.
UPDATE 2:52 PM ET
Al Horford has been cleared to play in Game 2 Thursday night.
- Kawhi Leonard cleared for 5-on-5 work
- Manchester United report net loss of Â£115.5m
- Christian McCaffrey added to the injury report Thursday