Head coach Monty Williams said that the intial plan is to bring Tyreke Evans off the bench.
Klay Thompson went to the locker room in the fourth quarter due to an apparent head injury.
Dwight Howard picked up his seventh technical foul of the postseason on Wednesday.
Shelvin Mack will have surgery on his right shoulder.
Kyle Korver had right ankle surgery on Wednesday and will be out for three months.
Stephen Curry is going through shootaround on Wednesday wearing a right elbow sleeve, but he will play and see his normal amount of minutes in Game 5 vs. the Rockets.
Beno Udrih will undergo ankle surgery and will not play with the Slovenian national team at Eurobasket this summer.
Al Horford was invisible during the Hawks' season-ending Game 4 defeat, scoring only two points on 1-of-6 shooting with two rebounds, five assists and one block in 29 minutes.
Paul Millsap had 16 points, 10 rebounds and five assists during Game 4, in which the Hawks were swept out of the playoffs with an 88-118 defeat.
Kyrie Irving returned from a two-game absence to finish Tuesday's series-clinching victory with 16 points (6-of-11 FGs, 2-of-3 FTs), two 3-pointers, four rebounds, five assists, one steal and one block in only 22 minutes.
LeBron James led the Cavaliers to the NBA Finals with a 118-88 win in Cleveland on Tuesday, scoring 23 points with nine rebounds, seven assists, two steals, one block and only one turnover in 29 minutes.
Dwight Howard will not be suspended for hitting Andrew Bogut above the shoulders during Game 3 on Monday.