Leroy Sane scored twice as Manchester City beat West Brom in the third round of the Carabao Cup in a match that saw Ilkay Gundogan limp off in his first start since December.

Gundogan, who has missed most of the past nine months after damaging ligaments in his knee, was substituted in the second half following a late tackle from Claudio Yacob, the scorer of West Brom's goal at the Hawthorns.