Rumour suggests that they're trying to sign Guehi. They already got Leoni anyway, so there's a backup there. I don't think you could say that if they change defenders, they won't concede the first or second goal that easily. At the end of the day, they played with Szobo as an RB while Macca isn't there, so I'd say we haven't seen them at their best 11 yet. Not to mention integrating new players probably takes more time than 1 or 2 games. I think what they need is time to integrate everyone so they don't get caught at transition easily.