He said: "Sometimes you get it right, sometimes you get it wrong. But Massimo does not need to try to prove a point to me now. I know he's a good player.
"I try to pick the team I believe will be the best on the night. I know it's very hard for Massimo to understand. But, as a manager, you are thinking, how are the opposition going to play?'
"I'd seen Barry coming on in games and closing people down, so I thought it might be his night. But it's brand new to him, even though he is 29.
"I've now had a look at players playing in different positions and decided what's good and what doesn't work.
"So it's not just the players who learned on Wednesday. I learned a lot as well, including one or two things about some of them."