Juventus have confirmed Sami Khedira will miss Wednesday's Champions League clash with Atletico Madrid to have medical tests after the detection of an irregular heartbeat.
Khedira trained as normal on Monday and Tuesday, but an "atrial arrhythmia" was noticed in their final session and Juve have sent him for tests.
In the announcement of their squad list, Juve confirmed Khedira's absence.
A statement read: "Sami Khedira has stayed in Turin for medical tests, from which emerged the opportunity to perform an electrophysiological study and eventual treatment of an atrial arrhythmia which appeared today [Tuesday].