Spurs want £200m for Kane, don't they? Or rather, they would only consider letting him go for that.
Don't think Lukaku would thrive in a Mourinho set up unless his game comes along. Zlatan can do it because his off the ball awareness movement and technique are superb. Lukaku works best in a system where he is one of many attacking focal points. If Mourinho puts everyone else on "keeping it tight" duty and gives Lukaku plus, say, two other players the responsibility for nicking a goal - that's not a recipe for the consistent success required to win a title IMO.