Lambert told the Birmingham Mail: "No-one is happy when they are left out, that will never change. You need everyone pulling the same way. They're all as important as each other.
"I had a chat with Barry and he's responded in a really good way - no problem.
"He has never been out of the reckoning. He got the injury a couple of weeks ago in training, a little problem with his hip, but he's over it now."