Paulo Dybala won't be sold by Palermo until the summer. 

Dybala, 21, has been described as "the new Sergio Aguero" and Palmero president Maurizio Zamparini has set his fee at over €40 million having bought him from Instituto for just £9 million back in 2012.

The Argentine has netted nine goals in 17 appearances this season and has attracted interest from Louis van Gaal and Manchester United.

"Dybala is worth over €40 million but I won't sell him until June," Zamparini told Radio Due.

"Many foreign clubs asked after him, including Manchester United. I told the English side that he is not for sale right now, but we can talk about it again in six months. In my view, he is the best striker in Europe at the moment."