After seeing the Swede score twice against Sampdoria last night, Mancini predicted: "He scored goals tonight just when he wanted. You saw the second goal, he decided he wanted to score it - and he did so.

"With his technique and his physical strength he can make things happen. I'll tell you this: if he believes in himself, if he continues to improve, then the day will come when he is capable of scoring every time he wants. Not one, but also two or three.

"It won't be long until he's simply that good."