Liverpool manager Jurgen Klopp has been branded "an idiot" by West Brom star James McClean after he refused to shake the hand of Tony Pulis following the fiery encounter between their respective teams.
The German explained that he did not shake hands with Pulis because he needed time to "cool down" subsequent to the conclusion of what he described as "not a friendly game".
He also claimed to have exchanged words with Pulis behind the scenes and Pulis has not had any complaints. However, McClean appears to have taken it to heart.
McClean said, according to the Mirror: "Obviously, look, I have got respect for the man, because he did a great job at Dortmund and that.
"But I think he is a bit of an idiot if I am being honest."
"On the game on Sunday, you can't act that way. Win, lose or draw, you have got to be respectful."
Of course, it is the kind of outgoing opinion that fans have come to expect of McClean, who has never hesitated to speak his mind regardless of who he upsets.
He followed that stance by later turning his back on the British national anthem during a recent tour of America.
Finally, he almost started a riot after celebrating West Brom's win over Sunderland in front of the travelling fans earlier this season, sparking a brawl between the players.
To be fair to Klopp, he was more than ready to explain to the press exactly why he didn't shake hands with Pulis. Usually, Premier League managers come up with a flimsy excuse with Arsene Wenger and Jose Mourinho firm advocates of the 'no, he snubbed me' line.
Klopp said: "We had some words in the game and sometimes it takes more than a few seconds to cool down. Usually I shake hands. It was not a friendly game."