Wolves striker Kevin Doyle spoke about how a group of senior members within the squad pulled McClean aside straight after the game to tell him he had crossed the line with his tweet.
He said: "We found out about it pretty much straight away and we said it to him straight away - it's not acceptable," Doyle said.
The Wolves man has seen his fair share of off-the-field controversies with the Republic during his 51-cap international career and he thinks McClean will actually benefit from the experience of his telling off.
"We ended up joking about it the next day," the 28-year-old added. "It's been good because it has probably got him integrated in to the group a bit more because we have all been taking the p**s out of him.
"We were thinking of getting him to sing in front of the group again - that made him nervous enough. I think he nearly cried the first time he did it.
"A few of the lads find it quite traumatic when they stand up in front of us so it might have been good for him."