Two right-backs in midfield - are Chelsea short despite £349m spent?

Chelsea ended Sunday's 2-1 defeat by champions Arsenal with two players who began their careers as right-backs alongside each other in midfield.

After spending £349m during the summer transfer window, how did they reach that point?

It was Reece James, who began his career as a right-back, who failed to track captain Martin Odegaard as he scored Arsenal 's winner at Emirates Stadium.

In the build-up to his first defeat as Chelsea manager, Xabi Alonso said he believes James can become one of the best midfielders in the world.

James performed well otherwise and spent almost half of last season playing in midfield.

But there are legitimate questions about Chelsea 's depth in that area after Malo Gusto replaced midfielder Romeo Lavia in the second half.

It was lax marking that led to Odegaard's winner, while a lack of creativity from the bench left Chelsea short as Arsenal boss Mikel Arteta's substitutes ultimately helped guide the hosts to victory.

" Chelsea don't have European football this season so they're playing less games and can concentrate on the Premier League. But the worry is you're finishing a game against the champions, and you've got two right-backs in midfield," Ashley Young told BBC Sport.