"I'm okay, quite relaxed," the Irishman told ITV Sport. "I remember having conversations about loyalty when I was at the club and I don't think he knows the meaning of the word.
"To constantly criticise other players that brought him success... I won't be losing any sleep over it. I just don't think the manager needs to do it.
"I don't know how many books he's written now. A lot of these players helped win a lot of trophies. It's just part of modern life. People like to do books and criticise ex-players. I'll have to do another book!"