Well Tuchel / Maria clearly disagree with you because he's supposedly just been offered an 11m Euro p.a. contract, which works out to be ~200k a week. I think that's probably the fair market rate for him at the moment, I wouldn't pay more. Sure you might find better bargains, but with much higher levels of uncertainty. There's not much uncertainty left with Rudiger: we know what he can and cannot do in the Premier league.