Seeing that he sold Coentrao, it's safe to assume that he's playing with some summer transfer update, so he should have Jesús Vallejo available.Madrid own Vallejo who could be the replacement for Pepe mate
I have Nacho and Mario Hermoso in bac kup for left wing I like playing youngsters as back up so I will probably not look for another left back this transfer window.Seeing that he sold Coentrao, it's safe to assume that he's playing with some summer transfer update, so he should have Jesús Vallejo available.
With him and Varane the centerback area is extremely well covered (one of the best defensive lines in the game for the next 15 seasons if they develop properly) and Nacho is a quite valid backup in case injuries, fatigue or suspensions happen.
So I guess that if I were him I'd rather focus on a decent back up for the left wing rather than on a centerback (since now he only has one leftback on the team).
He plays with a summer transfer update on (that's why Vallejo appears on Eintracht Frankfurt for instance), so he won't be able to get Mammana since he moved to Olympique Lyonnais this summer (as a replacement for Umtiti).Mammana as a back up CB, probably will not cost you more than £6m. Both sound investments as both will be worth £30+ within 2/3 seasons.