Manchester City manager Manuel Pellegrini has calmed concerns over Joe Hart's injury by claiming that it is "not very serious".
The England international suffered a hamstring injury during City's 1-0 defeat to Juventus in the Champions League on Wednesday.
Meanwhile, Pablo Zabaleta has suffered a setback in his recovery from a knee injury and should be out of action for a further 10 days.
"[Zabaleta] has the same injury in the ligament in his knee," Pellegrini told reporters. "He needs a treatment now. Joe Hart's is not a very serious injury but it is a muscle injury and it is important for him to recover well.
"I never complain about players who are injured - that is why we have a squad. I have confidence in [Hart's replacement] Willy Caballero."
City, who have suffered defeats in their last two games in all competitions, will take on Southampton on Saturday.
