Even this notion of selling abroad isn't feasible. You're immediately talking about less money unless PSG involve themselves (Bayern aren't breaking their business model), which doesn't benefit Spurs in the slightest, as, like you've said, leaves them with a massive void in an already terrible team - the money they'd get from Bayern would not offset the loss of Kane. It wouldn't even cover 1:1 for his replacement, who will not put up his numbers at that club.I dont think levy will sell. Spurs are average enough as they are (even though they are 5th in the league), imagine a spurs without kane's 25 goals a season? They'll be nowhere.
Kane would have to put in an official transfer request (which players hate doing as it for forefits all sorts of money owed to them). Then his agents would have to really spin the PR story about levy being ungrateful to kane / kane wants to move on to win trophies etc etc.
Its a tough extraction. For levy selling abroad would be an easier sell to the fans. Bayern / Madrid etc. Would kane go abroad though?
Personally, i see a 30 yr old kane, the same way as a 30 yr old benzema or 30 yr old leodowski. Basically id take any of them. Proven world class strikers.
Selling abroad - sans stupid oil/state money - is a net loss for them.