Spurs striker Kane, 27, was on holiday in the Bahamas when the island was added to the UK quarantine list on 7 August.
Harry Kane is now in self-isolation for 14 days after returning home.
Harry Kane is expected back in Tottenham Hotspurs training next week before their Premier League opener against Everton on 12 September.
On Tuesday, Gareth Southgate England manager is due to name his squad for matches against Iceland and Denmark on 5 and 8 September.
There is doubt over whether players from Chelsea, Manchester City, and Manchester United will be involved because they are still on their agreed 30-day break after the end of their European campaigns.
Kane was Spur’s top scorer with 24 goals last season.
Kane suffered a hamstring injury in January and spent four months on an individual training plan to ensure he was fit to play in time for the Premier League’s restart in June after the COVID-19 shutdown.
Tottenham faces League One side Ipswich in a pre-season friendly on Saturday.