Manchester United and Arsenal are both keen on signing the 17-year-old.
Lundekvam said: “He is a bit similar to Matt Le Tissier on the free-kicks and Wayne Bridge by the way he has come through.
“If he keeps going like this I think it is going to be difficult for us to keep hold of him. But I think it is best for him to be playing regularly.
“He is still very, very young, he has only been in the frame for about six months. It’s very easy to forget that he is so young.
“Every attack he is involved more or less which is a bit frustrating for us as defenders.
“He keeps charging forward and he is a major threat for us on the left. All the opposition are looking out for our left side.”