Michael Jordan has some fans worried he may be enjoying his European vacation a little too much. The NBA legend took in the UEFA Champions League match Thursday between AS Monaco and FC Barcelona at the Louis II Stadium in Monaco along with his wife,

According to Healthline, "yellowing of the eyes typically happens if you have jaundice," which "occurs when the oxygen-carrying components in the blood, called hemoglobin, break down into bilirubin and your body doesn’t clear the bilirubin."

NBA legend Michael Jordan was at the Stade Louis-II on Thursday to watch Barcelona take on Monaco in a Champions League match. Photos of him at the stadium immediately went viral on social media. Jordan was wearing a black shirt and his brand's very own baseball cap.