Former Chelsea winger Jesper Gronkjaer is keen to see Hakim Ziyech in action at Stamford Bridge.
The Ajax midfielder is moving to Chelsea for a deal rising to €44m.
Gronkjaer told Goal: "Ziyech is one of the players that has caught my attention in the past two seasons, even though he is not a product of the Ajax academy. You need players like him. I think every top club has watched him and wondered if he's good enough for their team.
"He is a fantastic player and I think he will play directly in the starting eleven with Chelsea. Almost any Premier League club can afford a player like Ziyech.
"Ziyech is a great addition to Chelsea and he will often get a starting place. In addition, we have yet to see the full potential of Christian Pulisic, he is also a great player. There are many things to look forward to at Chelsea."