Millwall head to Bramall Lane on Saturday 14th April to take on Sheffield United in the Sky Bet Championship (kick-off 1pm) - and The Lions' allocation of 1,539 tickets is SOLD OUT.
The club is liaising with both The Blades and the EFL in an attempt to obtain a further allocation and hopes there will be a positive outcome for Millwall fans.
A further update will be provided in due course.