Exactly why your whole argument kinda falls apart. You are basing it all on the assumption that because Kyle Walker worked out wonderfully over 8 years, Tino is guaranteed to as well, so we should just slap 80m down for the risk.
He is nowhere near the player walker was though. Our squad is more flexible than when we signed walker. But mostly, there really is nothing to suggest we or he are really that interested in the move.
We signed Gvardiol at 77m, the club didn't hesitate there, and while there were prolonged negotiations, there was constant noise that he was keen, that we were keen etc. There has been nothing of the sort for Tino. The odd 'monitoring the situation' claim. Cool, we probably monitor 20 players. He would be 'tempted' by a move. No shit, who wouldn't. 270 pages (in old money) of 'just pay it' chat, when it isn't even anywhere close to that.
This one has fuck all legs. Might change over the window, but right now I suggest people 'monitor the situation' of this thread, rather than actively forcing it.