Manchester City will reportedly hold a board meeting this weekend to discuss potential plans to sign a central defender in January.
The Guardian say chairman Khaldoon al-Mubarak is ready to sanction the move if Pep Guardiola desires.
It is added that City did not plan to act this winter but Vincent Kompany’s latest injury may change their plans.
City were linked with Juventus’ Leonardo Bonucci and Aymeric Laporte of Athletic Bilbao in the summer.
Kompany will be ruled out for a minimum of a month meaning he will have missed 39 weeks of this calendar year. Guardiola may decide he has to act as the Belgian’s absence compounds the problems in defence.
The manager remains unconvinced by Nicolás Otamendi while Aleksandar Kolarov, a left-back, is an auxiliary option in the position. With the 19-year-old Toson Adarabioyo having played only twice for Guardiola it means he has only Stones as a first-choice centre-back.
The problems in defence were underlined during Wednesday’s 1-1 draw at Borussia Mönchengladbach when Guardiola was forced into shuffling his rearguard into four separate units during the Champions League game.