Should stay imo. I don't think Rudiger is of a higher level. And Manolas is actually worse than him, who's just fast and can jump high but his gaffes are more frequent and more dangerous, he'd be completely exposed in our defense. Both would be, as is Murillo occasionally. Can't believe we allegedly wanted to spend all that money on them when we have a very similar player already here like Murillo. Our defense lacks confidence, so does he.
He should leave if we want to seriously upgrade (van Dijk, de Vrij, Kompany, Mammana etc)