They're after Robin Koch, a center back from Freiburg. Would assume that goes through as Ben White won't.
I actually caught a bit of their Athletic writer talking about Bielsa and his style — side note, he seems miles better than our current one . Apparently many have felt like they have needed another center back since he's been there and he came out and publicly said they didn't. If that's the case, they would be screwed as they only would have 2 center backs. (he's fine with Luke Ayling, a RB, as cover for there which i think is ridiculous).