Arsenal boss Mikel Arteta insists they won't be taking lightly Sheffield United on Saturday.
The Gunners host the winless Blades tomorrow.
But Arteta insists: "The way they have played against all the other teams has been strong, they've clung on and then it's been late goals conceded.
"They are fighting for their lives so it will be a tricky game.
"Everyone is on their toes, they know what is coming and I was very clear with them."
The manager also highlighted the form of Gunners midfielder Declan Rice.
He added: "He's been terrific for us and has performed at the highest level in big games.
"That's what you want from him. His contribution in these games has been really important so I'm really pleased."