The year of 2021 has seen the introduction of a brand new campaign called Cancer Deadline Day.
A new initiative, fans can donate to eight selected cancer charities on behalf of their favourite club.
As always, Lions supporters and players have made a fantastic effort, with Millwall currently top of the Cancer Deadline Day table.
But, club staff and players were particularly blown away by the generosity of one fan.
Charlie Harris, who wrote: "As a lifetime supporter of Millwall, starting in the 50's, I am now 84 and have terminal cancer. I give this donation in the hope that a cure will be found one day. Come on you Lions."
Like a true Lion, Charlie is still valiantly fighting against the disease. He has donated £400 towards the Cancer Deadline Day campaign - so it was only right for him to meet the gaffer...
To view the emotional video, click here.
Donate to Cancer Deadline Day by clicking here.