The 18-year-old forward joined the Chairboys from Tottenham last summer and made four appearances for the club before a 10-game loan spell with Hendon during the latter part of the campaign.
"I'm chuffed to be honest," Angol told the club's official website. "Last season was a difficult one for me and for the team I suppose, so this one is going to be big one for both of us.
"The loan helped me a lot in terms of match fitness and getting me physically aware of the game."
Meanwhile, the club also announced a new partnership with EA SPORTS which will see the computer-game giant's FIFA 14 game promoted on the front of the Blues' away shirt and the reverse of the home shirt.