Valencia coach Marcelino rapped Goncalo Guedes during and after defeat at Real Madrid.
Movistar picked up an exchange between the pair midway through the first-half.
The striker approached his coach and covering his mouth, spoke to Marcelino, only for his manager to chastise him with, "It's been 27 minutes and you haven't tested them."
In the post-match, Marcelino went further when asked about the Portuguese.
"If Guedes played, it's because he told us he was fit to play," he said.