The 17-year-old, who scored his first senior goal for Pools against Maidstone earlier this season, has signed a two-and-a-half-year deal with the Lilywhites.
North End manager Alex Neil told the club’s official website: “He’s certainly one for the future, I think he’s got outstanding qualities with his size and his stature and the fact that he’s played men’s football at such a young age.
“I don’t think there’s too many of those types about and I think the last time we went and got somebody in a similar situation it was probably Jordan Hugill when we took him from Port Vale and look what happened there.
“So all the signs are good, he’s one we will take a bit of time with and develop but I think all the indicators are that there is certainly something to work with and we are hoping to try and make him better.”
Watford boss Javi Gracia does not think Abdoulaye Doucoure's form will be affected by his omission from France's latest squad.