"He could change the complete XI, he feels, and we could still get the right result."
Defender Steve Finnan also underlined the squad strength at Anfield.
He said: "This is the best squad I have been involved in during my time at Liverpool.
"There is strong competition and we have brought in good attacking players, and that makes the choices difficult.
"But if you are in the Champions League, these are the sort of choices the manager needs to have.
"And we all want to win the Premier League, too, so there has to be the need for a much bigger squad for us to do well in both."