Will 2021 semi-finalists Brentford keep alive their hopes of a first-ever major cup final appearance?
In the previous round, the Bees overcame Colchester United; Keane Lewis-Potter and then Mads Bech Sørensen the scorers.
Meanwhile, in the Premier League, Thomas Frank’s team have only won one of their last eight, but do sit 11th.
This is after Saturday’s eventful draw at Nottingham Forest, in which Bryan Mbuemo and Yoane Wissa both netted.
The Bees would’ve won that one, only to be thwarted by a 96th minute fluke own goal by Mathias Jørgensen.
Back at home for the final time until Boxing Day, will Brentford march on into round four?
Gillingham meanwhile are one of just four League Two clubs to have made it this far.
The Gills beat AFC Wimbledon in the first round, before squeezing past Exeter on penalties a fortnight later.
So, they’re on the cusp of reaching round four, last achieving this in 1996/97.
In league terms, Gillingham are 20th in the fourth-tier, and were held to a 1-1 draw by AFC Fylde in the FA Cup on Saturday.
So, anything other than an emphatic home victory at the Brentford Community Stadium would be a major surprise.