Mikel Arteta believes Arsenal’s shock FA Cup exit at Nottingham Forest proves where they need to improve.

The Gunners crashed out of the competition after Lewis Grabban’s late goal condemned them to a 1-0 third-round defeat at the Sky Bet Championship outfit.

Arteta was without Granit Xhaka and Folarin Balogun due to Covid-19 while Emile Smith Rowe was also out injured and the Spaniard knows they need to add to the squad in January.

“I think it is clear where we need to strengthen but at the moment it is what we have and what we have, we have to play,” the Arsenal boss said.

“I want to try to get the best out of the players that we have. We have what we have (available) and we know we have issues in many different positions.

“But we try to put out the most competitive team that we could to try to win and it wasn’t good enough.

“We have the players to perform better than what they’ve done and we have the level to beat them if we are at our maximum and we didn’t have that.”

Arsenal failed to have a shot on target at the City Ground on Sunday with Forest setting up a fourth-round meeting with holders Leicester.