Arsenal has been active in their transfer window, as evidenced by a recent article from Yahoo Sports. The site reported that the club was looking to make changes through the window, which remains open until 11 PM BST on September 1st [1]. This comes after Arsenal's head coach Mikel Arteta had already made some moves during the previous window.
Meanwhile, another outlet, The New York Times, has been discussing potential transfer windows for Arsenal. In their piece, they mentioned that readers were asking about who might leave and join the club, suggesting there are indeed rumors circulating [2].
In a different article from Yahoo Sports, Manchester United was highlighted as having made some solid moves in their own transfer window. They have signed Danny Welbeck and Ismaila Sarr, addressing positions like midfield and full-back [3]. This move by Manchester United could be seen as a contrast to Arsenal's activities.