Spurs sports chief Damien Comolli told the club's website: "We are very pleased that John has decided to join us. We know he has the talent but we also know he is only 16 and so we will not rush him. He will have time to develop and will be working within a very talented development squad."
Speaking after signing, Bostock added: "I am definitely ready to make this move and Spurs is the team I wanted to join. I feel this is a club with a great future and this is where I want to be to develop my potential and improve as a player."