Have Arsenal's challengers done enough?

Arsenal have started the new Premier League season with two wins as the transfer window closes, looking in ominous shape to retain the crown they won for the first time in 22 years last season.

Have their main rivals done enough to prevent Mikel Arteta's side winning a second successive title?

And what are the other big issues as the Premier League's transfer business was concluded until January?

Chelsea may have lost Enzo Fernandez to Manchester City for £125m in the final hours of the window, but the business done this summer will still delight new manager Xabi Alonso.

Alonso opened with two Premier League wins, but goalkeeper Robert Sanchez's display in the opening victory at Fulham persuaded him to finally solve a long-standing problem by signing Emiliano Martinez from Aston Villa.

The list of incomings and outgoings are - as usual - almost too numerous to mention, but Morgan Rogers - a £117m signing from Aston Villa - has already formed a devastating trio in attack with Cole Palmer and Joao Pedro, while Maxence Lacroix is a quality defensive addition.

And in a shift in strategy, veterans Jordan Henderson and Danny Welbeck were brought in to add experience and their consummate professionalism to the Chelsea dressing room.

Chelsea were in the market in the final hours as well, but were bitterly disappointed when Monaco pulled the plug on their move for highly-regarded midfielder Lamine Camara as Fernandez departed.

A huge squad has no European football to offer a distraction, which is why Chelsea and Alonso could well believe they have the quality to also run close - although they remain outsiders.