Millwall will face Folkestone Invicta in a pre-season friendly on 11th July (kick-off 7.30pm).
Neil Harris' side will head to the 4,000 capacity Fullicks Stadium for much-needed match practice ahead of their 2017/18 Sky Bet Championship campaign.
The game will see towering striker Harry Smith return to his former club.
Tickets for the trip to the Isthmian League side will cost £10 adults, £7 students (with valid ID), £7 concessions and £2 juniors (5-18 years).
As well as a behind-closed-doors training camp in Portugal, The Lions pre-season schedule is now confirmed as the following:
Saturday 8th July - Dartford (a) - 1pm
Tuesday 11th July - Folkestone Invicta (a) - 7.30pm
Saturday 22nd July - Barnet (a) - 3pm
Tuesday 25th July - Stevenage (a) - 7.45pm
Tickets for the friendly against Stevenage at The Lamex Stadium are now on sale and full details can be found by clicking here. Ticket details for Millwall's other pre-season games will be announced on millwallfc.co.uk in due course.