George Clooney's father has warned the actor not to get involved in another relationship while he is so involved in his career.

"Some great woman is going to knock him off his feet," Nick Clooney is quoted by Breakingnews.ie as saying.

"He will be a wonderful husband and father. Though I hope he waits until he is at a point in his career where he can devote himself to a relationship.

"George wants to have children but he won't have one without being married, so that is one thing that will force the issue."