Pietersen will make his England comeback during the tour of India following a recent absence due to disciplinary problems and Morgan believes that his presence will give the squad a vital boost.
The 26-year-old told Sky Sports News: "The imposing player that he is, his confidence and the way in which he plays, rubs off on everybody around him. Me personally, I love batting with the guy so he helps my game.
"Everyone in the changing room will be happy with what has gone on and the decisions that have been made and I think we have got to draw a line under what has happened and move on."
The first Test between the two sides begins on November 15 in Mumbai.