When Eric Bailly came on as a substitute and handed the Serb a note from manager Jose Mourinho, it had many viewers trying to guess what message was being conveyed by the Portuguese manager.
Willian then tried to sneakily read it but exactly what the note said has since remained a tightly-kept secret with United narrowly holding onto their lead.
El espía Willian.
— La Casa del Fútbol en Movistar+ (@casadelfutbol) 25 de febrero de 2018
Bailly entrega a Matic la nota de Mourinho y el jugador del Chelsea intenta averiguar qué pone. #MovistarPremier pic.twitter.com/f2GaAvWZfj
Matic took to Instagram on Monday with a smile on his face, claiming that Mourinho's note was actually telling him he could have three days off after the game.
It is unclear if Matic was joking or he actually revealed a light-hearted side of his manager. Alongside a smiley emoji, Matic posted a picture of the 'note', which reads: 'You have 3 days off :)'.
En el instagram de Matić . Mou les ha dado a los jugadores 3 dias libres despues de varios partidos duros. pic.twitter.com/Pyk5s10qYz
— Devils United (@DevilsUtd99) 26 de febrero de 2018