Mikel Arteta has discussed said the upcoming clash against the Blades on Sunday and warned that their position in the table does not reflect their current form fairly.
"The margins in the league of winning, drawing and losing are really small and the details are crucial, but they have generated big chances every game and they've been really unlucky in my opinion not to get anything out of those games," he said as quoted by Arsenal's website.
"We have experience of playing against them both in the Premier League and in the FA Cup so we know how difficult it is to play against them.
"The season they had, the way they have evolved as a team since they joined the Premier League has been unbelievable, the work that the manager has done with the coaching staff with the resources they have is remarkable. We need to be really alert and we have to play at our best again."
The Blades are yet to accrue a single point this season sitting bottom of the table. They've lost all 3 games at the start without scoring a single goal.
Last term we met them three times. We narrowly lost the game at Bramall Lane [1-0] and were held to a draw [1-1] in the reverse fixture at the Emirates.
In the FA Cup, we managed to beat Sheffield United away 2-1 as Dani Ceballos scored an injury-time winner.
