Bayern Munich will meet Real Madrid, who beat holders Manchester City on penalties on Wednesday.
“They are fine and only went to hospital for a routine check-up,” said a spokesperson for the England captain.
The former Tottenham striker enjoyed a prolific record in north London derbies and a summer change of scenery made no difference.
The England captain is however no closer to that elusive first piece of silverware.
Kane is back in north London for the first time since leaving Tottenham last year as Bayern prepare for Tuesday's Champions League quarter-final first leg at Arsenal.
Saturday's "Der Klassiker" between Bayern Munich and Borussia Dortmund will unusually not be about controlling the title race or taking over the top spot in the German Bundesliga.
Brazil will hope not to break an ignominious 23-year-old record when they visit Wembley Stadium to square off against hosts England in a mouthwatering friendly on Saturday.
England captain Harry Kane will miss Saturday's friendly against Brazil and is "extremely doubtful" to face Belgium next week.
Harry Kane broke a 60-year record for most goals in a debut season while Jamal Musiala scored twice as Bayern Munich won 5-2 at Darmstadt on Saturday.
Kane now has 30 goals in his first season in Munich colours, matched the record for a maiden campaign set by Uwe Seeler for Hamburg in 1963-64
Bayern Munich striker Harry Kane hopes Tuesday's 3-0 win over Lazio, which secured progress to the Champions League last eight, will be a "turning point" in the club's season.
Harry Kane scored a goal in each half as Bayern Munich beat Lazio 3-0 on Tuesday to reach the Champions League quarter-finals 3-1 on aggregate.
Bayern Munich must follow their 2-1 victory over RB Leipzig with a winning run to get their season back on track, forward Harry Kane said.
Harry Kane scored the go-ahead goal to help Bayern Munich to a 3-1 comeback home win over Borussia Moenchengladbach on Saturday, keeping hot on the heels of leaders Bayer Leverkusen, who won 2-0 at Darmstadt.
"I've known Eric for a long time, played with him for a long time, and I know what a great player he can be for us," Kane said.
Jamal Musiala scored twice and Harry Kane added a late goal as Bayern Munich won 3-0 at home over Hoffenheim on Friday as the club celebrated the life of Franz Beckenbauer.
"It's been tough here without the family for these four months, without the kids and without the wife," he added.
Kane scored twice and now has 20 goals from just 14 league matches since joining Bayern in the summer from Tottenham.
According to Google's annual review, 2023 witnessed significant films and celebrity deaths.