Have title contenders done enough in transfer window to challenge Arsenal?

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.

The Gunners had a quiet final day to the window having concluded their business before the traditional late rush – but those hoping to unseat the reigning champions have all been busy expensively re-shaping their squads to mount a challenge.

So how do Arsenal look? And 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?

Arsenal 's interest in Atletico Madrid's Argentina forward Julian Alvarez did not bear fruit, despite their attempts to persuade him away from his preferred destination of Barcelona.

Alvarez's dream move to Barcelona was emphatically blocked by the Atletico hierarchy, leaving The Gunners with hope he may take the only choice available to him to leave Diego Simeone's side.

In the end, no deal was done – and perhaps the only flaw in Arsenal 's current make-up is whether they carry a consistent spearhead threat up front.

Elsewhere, they look formidable in all areas and still the team to beat after cruising past Coventry City and winning at Aston Villa in their opening two league games