Have Arsenal's rivals done enough in transfer window to challenge?

As the transfer window slams shut, BBC Sport's chief football writer Phil McNulty poses a pointed question: have Arsenal's title rivals actually done enough business to knock the champions off their perch this season?

With Arsenal having strengthened over the summer to defend their crown, McNulty's piece examines whether the likes of the Premier League's other big spenders have matched that ambition in the market, or whether the Gunners have quietly stolen a march before a ball is even kicked in earnest.

Details of specific transfer business by rival clubs aren't laid out in the source teaser, but the framing suggests scepticism — the question itself implies McNulty isn't convinced the chasing pack has closed the gap.

It's a theme that will likely dominate debate as the new campaign gets underway, with attention turning to whether Arsenal's rivals can back up transfer window activity with genuine title challenges on the pitch.