Gibbs Racing's Denny Hamlin expressed his concern for fellow driver Kurt Busch and his health.
However, he seemed pleased with the performance of Bush's replacement Ty Gibbs.
Kurt Busch will miss his fourth race on Sunday after the unfortunate Pocono car accident.
The driver is still recovering from his injuries and does not seem ready to get back on track anytime soon.
After his car accident at Pocono Raceway, Bush was left with concussion-like symptoms.
Since then, the driver, unprepared for the race, has posted about his malaise on his Twitter handle.
Kurt Bush is trying to surround himself with a high-energy environment.
He was also seen with his team and at Charlotte FC soccer matches and Cubs baseball games.
However, Gibbs Racing's Denny Hamlin thinks Bush's condition is still a concern.
Talking about Bush, Hamlin said, "It's definitely related to his health.
Denny Hamlin supports Busch's decision to take time to recover.
He applauds Kurt Bush for making sure he is 100% cured before getting back on track.