I would take Clauss, seems like a solid back-up for JM. 2 year contract, low wages and he should be happy.
Tchouameni rumors are complete garbage, but between him and Thuram we would probably have the best midfield in the leage or at least very much on par with Inter (saw they also signed Sučić). But as said, completely unrealistic and there's no way that Real let him go. Camavinga would be a more realistic option.