Who is Saif's foil in the novel, In the Eye of the Sun?

Gerald serves as a foil to Saif's character in every possible way. Awkward and unrefined, the Englishman does not reveal a single trace of Saif's sophisticated taste and manners. Asya initially responds positively to his interest in her, as she was experiencing sex for the first time in her life with him. Yet from the beginning of their illicit affair, Asya knows that her uncouth lover, selfish and exploitive as he is, can never take the place of her sophisticated husband in her life. As the affair proceeds, Asya discovers that Gerald's unrefined manners are more intolerable than Saif's detached attitude in their marriage.