WATCH: Arsenal fall behind to one of the best goals you’ll see in the FA Cup all season

Pick that one out.

For the second time in the afternoon, Arsenal found themselves behind at the City Ground courtesy of a goal from Eric Lichaj. The American had already scored the opening goal of the afternoon, giving Nottingham Forest the lead after 20 minutes with a near post header. That lead didn't last too long, cancelled out by Per Mertesacker's equaliser three minutes later. Then, with half-time only a matter of second away, the ball fell to Lichaj on the edge of the area. Cushioning the ball on his chest, he then unleashed a brilliant controlled, dipping volley into the top corner of David Ospina's goal with the outside of his right foot. Take a look... https://twitter.com/btsportfootball/status/950046930398167040 Not bad for a defender, eh?