Antonio Rudiger appeared to tell Andriy Lunin which way Mateo Kovacic would send his penalty before the goalkeeper made a vital save to help Real Madrid beat Manchester City on Wednesday night.
Footage shows Rudiger frantically pointing to his left - the goalkeeper's right - in the moments before his former Chelsea teammate took his spot kick.
Lunin obliged, diving low to his right to keep out Kovacic's effort. That proved to be the difference as the 14-time European champions reached the semifinals after Wednesday's second leg ended 1-1 over 120 minutes.