You were talking about Tomori going for 25m+ and why couldn't Dean do the same, but the only reason he did go for that is because he spent a season on loan and we'd need the money now in order to justify your net spend - or at least an obligation, which Tomori did not have. Your Martinez example as well, he was on pittance, so they could treble his salary and still only add about £8-9m on a 4 year deal. A similar deal would add £20m to the full deal for Dean, I still don't see a club willing to do it yet.
My mistake, read a wrong report. Dortmund haven't spent over £30m on one player for god knows how long/ever maybe? I don't see them being the buyers, I see it more likely being Spurs or someone and that would make him equal 5th at Spurs.
Again, I hope you're right, but I am yet to see any indication anyone will be willing to spend £30m + his big wage.