The event at Elland Road, from 10am to 4pm, will be a family fun day with face painting, clowns, stilt walkers and football related games.
Fans will be able to find out if they have the hardest shot, with tests carried out by radar.
Also, United have announced that 12,000 supporters have renewed their season tickets - a reduction of 2,700 on the same period last year.
Fans will be able to find out if they have the hardest shot, with tests carried out by radar.
Also, United have announced that 12,000 supporters have renewed their season tickets - a reduction of 2,700 on the same period last year.