Millwall's Emirates FA Cup Fourth Round tie at home to Bristol City will take place on Saturday 23rd January (kick-off 3pm).
The tie will be broadcast live on BT Sport Extra 6.
The Lions and The Robins have met once already in 2020/21, with Tom Bradshaw and Mason Bennett finding the net in a 2-0 win for Gary Rowett's side at Ashton Gate in mid-December.
The winners of the tie will travel to either Sheffield United or Plymouth Argyle in Round Five.
