Revere, who spent all of last season in center, has played his last seven spring training games in left.
Phillies manager Ryne Sandberg said the move is official "barring anything that could come up."
Revere had a .988 fielding percentage in 141 games in center last season, committing four errors.
Sandberg also announced on Sunday that Cole Hamels will be Philadelphia's Opening Day Starter.
- Molly Geary