Arsenal boss Mikel Arteta has no doubts about the progress of Bukayo Saka.

However, Arteta is reluctant to dub the winger as "world class" at this stage in his career.

"Players have moments," Arteta explained. "You can analyse just the attacking stats, the goals or assists and then make a judgement - and that's it.

"But his overall play, overall contribution, his numbers and the way he was affecting the game was still high.

"Is he now more efficient (than couple of months ago)? The answer is yes. The impact he's had in the last seven or eight games has been really good. I'm really happy."