The Reds come into this match on a 10-match unbeaten run, while Arsenal have avoided defeat in the Premier League since the beginning of September.
The victors that day? Manchester United.
One of Erik’s own January arrivals, Wout Weghorst, made his debut in midweek versus Palace, and could be in line for his second appearance since arriving at the club on loan from Burnley.
Find out whether Trossard and Weghorst will feature, when the line-ups are announced across our official platforms at 15:30 GMT on Sunday.