One Chelsea coach upset Pep Guardiola during Manchester City's defeat yesterday.

The Mirror says the Citizens boss was filmed by BT Sport cameras after his side's 2-0 defeat approaching each and every member of the home team's backroom staff to shake their hands.

But it seems his exchanges with the staff weren't entirely friendly, with the Spaniard appearing to get angry when speaking to the Blues' fitness coach.

The brief exchange involved Guardiola holding his hand out for Paolo Bertelli to shake, which he eventually did.

But the pair shared a few words in the build-up, and the Manchester City boss reacted by pulling his hand away from the coach so that he couldn't shake it.

Guardiola was then seen walking away before greeting another Chelsea coach. It's not clear what the duo discussed and why Guardiola reacted in the way he did.

Salty much? imagine if it was Mourinho or Klopp the media would go mad. Be a professional Pep pic.twitter.com/xn28b7GjGS#CHEMCI — Irvin (@LfcOkk) December 8, 2018