McCarthy takes his troops to Old Trafford tonight full of confidence after the surprise success at Tottenham on Saturday but he is very wary of the what the trip holds as he points out United rarely lose two on the bounce at home.
McCarthy said: "They must be rubbing their hands together to be playing Wolves at home.
"They must be thinking, 'Wolves are coming and we have just been beaten by Villa ... If ever there is a chance to get yourself back on track it is to slap these insolent little so and sos coming up from the Black Country and we are going to give them the biggest doing they have ever had.' I would be thinking that if I was a Manchester United player. I would be rubbing my hands with glee that we were coming up.
"The lads who are playing will be wanting to win the game. But we will not be going and chasing it and playing free open and expansive football because if we do they will beat us. Let's clear that up. We will be cautious and disciplined like we were at Tottenham."