Transfer Q&A: Has this season taught Arteta he needs a bigger squad?

BBC Sport's football news reporter Alex Howell has been answering your questions on the transfer window.

Paul, Dublin: I hope we don't leave ourselves with such a small squad again. Even when most of the squad was fit, Mikel Arteta was slow to rotate. There's no point in having squad players who just fill out the bench on matchdays.

Alex: Arteta has done a great job at Arsenal but one criticism is that he does not rotate his squad that well, and as you say it is not the biggest. Arteta would say that injuries have robbed him of the opportunity to rotate, but look at the Gunners' win over PSV in the Champions League. Going into the second leg, the Gunners were 7-1 up and he started Declan Rice. And then, when Arsenal were 9-3 up aggregate, he brought on Martin Odegaard and Gabriel Martinelli.

Oleksandr Zinchenko is an example of this. Yes, he started that second leg in midfield, but when he arrived at the club from Manchester City, he was a key part of the squad, but since the emergence of Myles Lewis-Skelly and the signing of Riccardo Calafiori he has barely played. He can play in midfield but Arteta likes to play and keep the rhythm of his key players.

The Arsenal boss has probably learned from this season's injury crisis and will say that if he has more players in his squad who are at a level he thinks is good enough, he can use more of them.

Read more of Tuesday's transfer Q&A with BBC Sport's football experts