I don't think he'll leave in Winter transfer window either. Benzema still plays and Kane won't wait in bench. They can't play with two strikers or cut Vini as well, so I don't see the point of transfer in this break.
Hahaha, you guys are already talking about retirement of Kane, but the guy is playing at high level, maybe his best season of career, World Cup included
He still have at least 6 seasons before thinking about retirement.
In my opinion, Real Madrid can have both in this transfer window, and it's interesting to the club, look at the Benzema injury history:
Seasons 20,21,22 and 23 only
Source
Now look at Kane's history:
Source
Real Madrid can have both, maybe not playing together most of matches, but I see Benzema still playing well but with risk of injuries with his age, and in the end of La Liga and finals of UCL, two strikers can be awesome, they can spare one or another and always have a top striker.