ATLANTA -- Sources told ESPN's Adrian Wojnarowski (Zach Lowe) that there is no structural damage to Giannis Antetokounmpo’s left knee following his awkward landing in Game 4 of the NBA Eastern Conference finals.An MRI showed that Antetokounmpo's ligaments are healthy and a timeline for his return was not established, according to ESPN sources.He is listed as in doubt for Thursday's Game 5 in Milwaukee. The series is tied at 2-2.Bucks coach Mike Budenholzer stated, "We'll just be taking it day by day" and watching how he does. "When you think about the possibilities, I believe where this has landed should be viewed as a positive. It's still a very difficult fall."Atlanta Hawks center Clint Capela and star Trae Young are both in doubt for Game 5.Antetokounmpo was injured in his hyperextended knee and left Game 4 against Hawks just seven minutes into the third quarter. Antetokounmpo had jumped up to compete in an alley-oop between John Collins and Clint Capela. His knee was buckling as he landed awkwardly on the left leg.He fell immediately to the floor, remained there for several minutes with Bucks and Hawks coaches and players surrounding him, before he finally got up. Thanasis, his brother and teammate, helped Antetokounmpo to his feet and he walked slowly off the court with his assistance. Television cameras showed Antetokounmpo without assistance walking back to his locker room, but he still had a noticeable limp.Antetokounmpo averaged 28.2 points, 12.7 boards and 5.2 assists during the postseasonBudenholzer spoke out about the possibility of Antetokounmpo playing in Game 5.Atlanta led by 10 points at the time of the injury. They won Game 4 with a 110-88 victory without Young. Young was injured and is expected to miss the remainder of the game.Capela was diagnosed as having eye inflammation after he accidentally elbowed his right eye during Game 4. Hawks' top rebounder, Capela, left the court wearing a towel over his forehead and didn't return. After arriving in Milwaukee, he was examined by the team's ophthalmologist.This report was contributed by The Associated Press.