The striker was playing at the World Cup as the Atlas Lions made history and became the first African side to reach the semi-finals.
Ziyech had only just returned to international level after falling out with former manager Vahid Halilhodzic. Outside of Morocco’s squad for the postponed 2021 African Cup of Nations played earlier this year, the 29-year-old even retired from international football.
While Ziyech is once again a key player for his country, he has consistently struggled for playing time at Stamford Bridge.
A £37 million signing from Ajax in the summer of 2020the former FC Twente youngster has only started one Eredivisie match this season and has done so aroused interest from AC Milan.
Chelsea will further strengthen their frontline with the arrival of RB Leipzig and French striker Christopher Nkunku, while Molde teenager David Datro Fofana is also expected to join.
As a result, Regragui has told Ziyech to find a new club to guarantee first-team football.
“[Selim] Allah and [Azzedine] Ounahi will definitely find better clubs and the same goes for Ziyech, who has shown what he can do, he deserves to be a starting player at Chelsea,” he told Viola News.