He 26 not 30, he can be allowed a few months to get ready. But he has enough time to prepare physically and mentally already.
He just can not afford to lose any pace cos he is already not the quickest. Not as bad as Mata who had ok acceleration but horrible end speed, Ziyech has longer legs. I also score him a few of those typical winger goals where he dribbles along the ride and then cuts inside, so he might be able to perform classic wing play as well as playing those awesom ecrossfield goals he is known for.