José Mourinho substituted Sulley Muntari because he had been low energy . Muntari is a practicing Muslim who , like many of the same faith around the world , is currently not eating during the hours of daylight to mark the Ramadan holy period . The Algerian international is a Muslim and had been praying during Ramadan . French international Franck Olivier is another high - energy Muslim .
José Mourinho substituted Sulley Muntari because he had been low energy . The Algerian international is a Muslim and had been praying during Ramadan . French international Franck Olivier is another high - energy Muslim .