(Reuters) - Manchester City defender Nathan Ake joins right back Kyle Walker and goalkeeper Ederson in facing a spell on the sidelines with injury, but John Stones may return against Aston Villa, manager Pep Guardiola said on Tuesday.

Ake was forced off after 27 minutes during City's 0-0 home draw against Premier League title rivals Arsenal on Sunday, a fixture that Walker and Ederson missed, while Stones was an unused substitute.