The Dane repeatedly claimed last season that he was thinking about leaving Anfield due to a lack of first-team opportunities.
"It is no secret that I had problems last season and I am considering things," the 29-year-old told Danish newspaper BT.
"How things turned out last season is not acceptable for me. I am here now and it is up to me to show the coach that I should play."
Liverpool continue their pre-season campaign on Wednesday when they face Roma in Boston.