Chelsea manager Thomas Tuchel has confirmed Hakim Ziyech will start the Blues' FA Cup fifth round tie against Barnsley.
And he has urged the Dutch attacking midfielder to make the most of his opportunity to shine as he continues to adapt to English football.
Ziyech joined the club from Ajax in the summer, but despite showing flashes of brilliance has so far managed just one goal and three assists in the Premier League.
Speaking ahead of Thursday's match against Championship opposition, Tuchel insisted he was confident the 27-year-old would soon be able to show his very best form.
"Hopefully tomorrow we see the best in him," Tuchel said. "He had a good training week and we count on Hakim like on everybody else, there’s absolutely no doubt about that.
"We took some decisions for other players, not against him but for other players, and he will have the chance to show tomorrow the same quality he shows in training, the same determination."
Tuchel urged fans to be patient with Ziyech, and thinks it will take him time to adjust from the switch from the Eredivisie to Premier League.
"For me it’s clear that he needs to adapt to this kind of football, this kind of league," he added.
"He comes from the Dutch league, from a strong Ajax squad but they were the benchmark in the league and it’s not the same intensity and competition as it is here.
"But he’s adapting and he has the certain quality to decide matches and the certain quality to do the unexpected which can give you an extra twist in any game and on level which he proved with Ajax.
"Of course we want to push him to the same level of performance that he showed there and this is our job."
