This feels like a really desperate move from Levy.
The squad needs a striker and Mourinho wants a particular profile of no9, so he goes after a brand name that isn't a no9 and may break the wage structure and alienate Kane and Son
True but any #9 is going to be a backup for Kane rather than a foil and hence will only attract a certain type of player, that could be seen as more of a secondary type of purchase that will be sorted out near deadline day based on whomever they can get.
If I were them I'd look at Danny Sturridge maybe, a free agent and his ban is over, proven PL goalscorer who would presumably be happy to sit on the bench at Spurs given where his career has gone lately.
That said having already bought Bergwijn it doesn't make a lot of sense, basically there is only room for two of Bale, Son and Bergjwin meaning you'd be benching either one of the new big purchases or a popular player in Son. Unless he wants to play Kane and Son as a pair up front but I don't see how that would work either, if you go 4-4-2 you can't really fit Alli into that, if you go 3-5-2 you'd then be having Doherty competing for one of the wing-back slots with them.