Arsène Wenger's delight at Arsenal FC's 3-0 win against Sevilla FC was tempered by the news that midfielder Tomáš Rosický has picked up an injury. "We have bad news about Rosický because he is a player I like to have in the side and he has injured his hamstring again tonight," said the Arsenal manager. "I don't know yet [how serious it is]. We have to wait 48 hours, but he will be out for at least two weeks."