Former Russia coach Anatoliy Byshovets is convinced Mykhaylo Mudryk can make it at Chelsea.
Shakhtar Donestk sold the Ukraine winger to Chelsea for 100m this week.
Byshovets told Vprognoze: I rate it positively. I watched this young player play. In general, he should be happy. I don't think it will be easy for him there.
"The English Championship is a test not only for skill, but also for personal qualities. The competition will be very high.
"I think it will not be easy for him to adapt: a new team, problems of language and mentality."