Jesper Olsen has no doubts Hakim Ziyech will be a success with Chelsea.
Like Ziyech, Olsen played for Ajax before moving to England - to join Manchester United.
The former Danish star told Stats Perform News: "There's no doubt he will be a success at Chelsea.
"I think Frank Lampard has done a really good job. He knows the club inside out. Seems to be very good in terms of management and playing style.
“This is the important thing, he wants to attack and play offensive football. That will not be a problem [for Ziyech].
"The players coming out of Ajax, they are like that. Being a defender or midfielder, you are attacking-minded. No doubt about that."