@Jason regularly watches BMG if I'm not wrong. He'll have a better perspective. From what I've seen from Dahoud though, he is a true B2B midfielder, in that he effects both halves of the game in a positive manner. Caught my eye big time when watching Christensen and Thorgan occasionally, he stood out quite a lot between them.
Conte's biggest gripe with Fabregas is his lack of athleticism but Dahoud has that in bundles. Defensively, he's very 'feisty' if you want, tackles very well. The main thing he has to work on is his decision making and he seems a little bit under developed tactically but nothing Conte can't fix. He has all the tools, him and Kante in midfield would be one of the most dynamic pairings out there.