Cole believes the Morroco international can become a superstar at Stamford Bridge after a bright start to life in West London.
Ziyech agreed to join the Premier League outfit this summer after Chelsea thrashed out a €40 million agreement with the Eredivisie giants Ajax.
His first weeks in Chelsea was disrupted due to an injury he sustained during a pre season match against Brighton and Hove Albion, but has since recovered and started showing his worth.
Ziyech made two assists against the Blades on Saturday as Chelsea came from a goal down to beat Chris Wilders’ men.
“We saw the quality of [Ziyech] last year in the Champions League and the impact he had at Ajax, and he has gone under the radar a bit due to the [pre-season] injury,” Cole told Chelsea’s website.
“But he has come back now and he looks fit, he looks like he is enjoying the way Frank plays, and enjoying playing with his team-mates here.”
“He is using that wand of a left foot to perfection at times and he pulled the strings [against Sheffield United]. So I think he is a big player for Chelsea.”
“Ziyech likes to pop inside and give James the space to attack which is a strength of his, and it is difficult to mark when you come into those little pockets and little areas.”
“Then when Ziyech gets on his left foot, he has great runners like Timo Werner who loves to run off the center-back’s shoulder with the quality that he has, so it is exciting watching them in attacking form.”
“But also I am happy that yes, Chelsea conceded a goal, but they are definitely looking defensively stronger and more solid as a unit now.”
