Ajax Amsterdam coach Eric Tin Hague has warned his Chelsea counterpart Frank Lampard about dealing with Moroccan striker Hakim Ziash, who will join the English team in a few days.

Ziyash received a special honor from the Ajax administration after taking the last training session with the team that spent 4 seasons with him.

Hag said in statements to Ajax that Ziyash "is sometimes a nightmare for coaches," but he gave the perfect recipe to deal with him, and said that the Moroccan striker needed to have a space to express himself during the training.

He added, "Ziyash is stubborn, but this is what makes him a genius. He sees things that no one else sees. If he finds an opportunity to play as he likes, you will see his development."

The Ajax coach considered that Ziyash is a role model for Ajax youth, because he will move to a large team after a successful career with the Dutch club.

And Chelsea signed Ziash, 27, in a deal valued at about 40 million euros. He will join the English club early next month after 4 years with Ajax during which he won 3 local titles, scored 48 goals, and awarded 82 decisive passes during 165 games he played with the Dutch team in All competitions.