Manchester City boss Pep Guardiola admits being short of options at the back could become an issue.
John Stones and Nicolas Otamendi are now fit again, but Rodri has since picked up an injury and Fernandinho will be suspended for the Carabao Cup clash with Southampton on Tuesday.
Guardiola said: "For the short term we can handle it. For a long time, I don't know.
"And of course against top, top, top, top teams, when you don't have players playing in their own position, I don't know what's going to happen.
"But before it's going to happen I'm not going to say it's a disaster or what a pity."
