Do you believe Kane can be loaned out to another club? Because the truth is, even Tottenham are not willing to sell Kane. Moreover, the factor of clubs loaning their players to other clubs is because, the player is not included in the coach's plan so the player is loaned out and or does not get a place in the main squad. But regarding Kane, this player is clearly always the first choice in Tottenham's main squad, so it is very unlikely for Tottenham to loan Kane to another club. Also related to Vlahovic, from some sources I got Vlahovic was confirmed to stay at Juventus, and that made PSG or maybe other clubs unlikely to be able to bring Vlahovic at this moment.
Its impossible thing with Harry Kane has option with loan, I don't think Tottenham Hotspur prefer for loan Harry Kane due he has values above 80 million due last bid offer from Bayern Munich. Tottenham Hotspur has one year contract left for Harry Kane and loan is not right option because Kane will be free agent next season if can't reach extend contract.
What ever rumored with Harry Kane but he still in starting line for Tottenham Hotspur last pre season match against West Ham United, seems if not any progress yet about Bayern Munich bid offer above 100 million euro there are seems not any chance for Kane will leave Tottenham Hotspur next season. Harry Kane keep the main players for Tottenham Hotspur for next year despite reach agreement for extending contract or not.