The attacking midfielder underwent medical tests on Tuesday before signing on and heading off on international duty. He will return to begin training with his new team-mates on July 28.
"I am very happy to be here and I think Spurs is a very forward thinking club," said Jonathan when asked for his reaction to completing the switch from Royal Excelsior Mouscron. "It is obviously a big club, so I am very proud to join.
"The club contacted me two weeks ago and invited me to come and look at the facilities and what Tottenham have to offer.
"I am very much hoping to break into the first team at some stage and looking forward to mixing well with all the players."
The 18-year-old is not fazed by leaving his homeland at such an early stage in his career, pointing out that other clubs were interested in his services.
He is looking forward to learning another language and sampling a different way of life.
"I am relishing the prospect. I am a bit apprehensive, but not too much. There was quite a bit of interest from other big clubs and I think the move will improve me - to come and learn another language and culture interests me very much."
Jonathan was suitably impressed by White Hart Lane and there are certain games that stand out in the fixture list for him.
"Excellent, superb facilities. It is one of the biggest stadiums I've ever been to. I am looking forward to playing in the London derbies to sample the atmosphere."
Thanks to the official website of Royal Excelsior Mouscron -www.excelsior.be- for their help
Jonathan Blondel described Spurs as 'a forward thinking club' as he pondered the prospect of plying his trade at White Hart Lane.