Benjamin Mendy will return against Burton Albion in the EFL Cup after two months out, with Pep Guardiola asking the left-back to step up.
Nicolas Otamendi has drifted out of favour at Manchester City and Pep Guardiola conceded the Argentina international is dissatisfied.
Hector Bellerin's season is over due to injury and fellow Arsenal defender Laurent Koscielny backed the full-back to return stronger.
Emiliano Sala became one of the hottest properties in European football after hitting 42 league goals in three-and-a-half seasons at Nantes.
Chris Mepham is Bournemouth's third signing of the month after he completed a permanent switch from Championship club Brentford.
Leroy Sane's 72nd-minute goal has breathed life back into the Premier League title race, as Manchester City beat Liverpool 2-1.