Dallas played alongside the starlet in Leeds' under-23 win over Huddersfield earlier this week.
Leeds United have sent the recent recruit out on loan for three months.
Leeds United brought the young player to the club this summer.
Billy Whitehouse has joined Leeds from Doncaster Rovers.
Leeds United are looking to add players to their under-21 squad for the upcoming season.
Leeds are set to add Billy Whitehouse to their squad.