So in 6 months Kane will be 30, with only 1 year left on his contract and surely motivated to break Shearer's goalscoring record and possibly win trophies. If Spurs don't finish in top 4 he'll want out. He won't go to City as they have Haaland now, won't go to Arsenal. Not sure Klopp would go for him at Liverpool, Chelsea are Spurs' London rivals. Newcastle spent 70M on Isak last summer, they'd want to strenghten in other positions you'd think.
Of all English clubs, I'd imagine United being favourites but negotiating with Levy would surely be frustrating. He wouldn't have same power as with City in 2021 though with Kane's contract expiring in 2024.
One thing that could perhaps make him want to stay at Spurs would be Pochettino coming back as manager. Perhaps.