The midfielder’s struggles began under Unai Emery who called for him to be more “offensive” in his play and play higher up the pitch. Then, after an encouraging start to life under Arteta, the Uruguayan lost his starting place to Dani Ceballos before fracturing his ankle against Portsmouth in March.
With the three-month break caused by the coronavirus pandemic, however, Torreira now has the opportunity to finish the 2019/20 campaign and his head coach believes his previous struggles are behind him.
“It’s been really tough for Lucas in the last few months. He had a really difficult injury, the lockdown was here, he travelled away,” Arteta said.
“But since he came here, you look at him, the way he trains, I knew yesterday [against Wolves], throw him in [for] 10, 15 or 20 minutes and he’s going to give you absolutely everything.
“For a player who’s been out for such a long time to make the impact he made, credit to him as well.”
Where Torreira fits in Arteta’s midfield plans are yet to become fully clear. Although he did impress in his seven-minute cameo at Wolves, where he brought the bulldog-like energy Arsenal fans are so used to seeing, Ceballos – who has taken his place – is a much different midfielder.
Not only can the Spaniard fulfil his defensive duties – according to twenty3, he has completed the most successive defensive action , won the most loose balls [six], second-most interceptions  and second-most ball recoveries  at Arsenal post-lockdown – but his ability to create on top of this make him a much more balanced midfielder.
In the the more conservative role he played at Wolves, however, Ceballos demonstrated Arteta may still have a use for a more defensive minded midfielder. With three of Arsenal’s final five league games against Leicester, Tottenham and Liverpool to be vital in the club’s Champions League ambitions – as well as the FA Cup semi-final against Manchester City – this will have to be kept in mind.
Ceballos’ ability to do both sides of the game effectively, has made Arteta keen to make his stay at Arsenal permanent, however.
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“I am really happy with him [Ceballos], the way he is evolving and I love how much he likes to play football. The passion that he puts in every training session and every game, you have to see just his celebration. Whether he’s on the pitch or on the bench, the way he celebrates, he puts his life into it,” he said on Ceballos’ situation.
“Again, I am really happy with him, I think he’s evolving the right way and is becoming a really important player for us.
“We are talking to the club. Obviously, we don’t own the player, it’s not in our hands so the clubs will need to have communication and see what we can do.”