Harry Kane is doubling down on his plans to switch from football to football -- the Tottenham star says he's still interested in becoming an NFL kicker after his soccer career is over ... saying he understands it'll be a ton of work, but he's down for the challenge.
The 29-year-old English striker reaffirmed his intentions during a sit-down with Michael Strahan on "Good Morning America" ... making it clear he's not joking about hopping over the pond to take a stab at American football.
"It's something I want to definitely explore," Kane said on Wednesday.