The Celtics relayed Thomas' statement on Twitter:
Boston Celtics @celtics
A statement from Isaiah Thomas: https://t.co/ZkcvTpQ4oq4/19/2017, 6:00:40 PM
The Celtics, who trail the Chicago Bulls 2-0 in the first round of the Eastern Conference playoffs, will be back in action Friday evening at the United Center in the Windy City (7 p.m. ET, ESPN).
Thomas is expected to rejoin the team for Game 3.