Yesterday, Chamberlain, who is still a free agent, accepted an interview on Ben Foster's podcast, in which he talked about the changes Arteta made to the team when he played for Arsenal.

Chamberlain said: "(Wenger) promoted pure football. From the perspective of how I watch the game now, what we lacked at the time was analysis, really not at all.

"What's interesting is that this is actually the reform brought about by Mikel (Arteta). In the past, we only focused on our own style of play.

"Mikel said: 'Listen, that's enough. I need to watch Watford's game tape and understand their tactics.' Because we have never done this before, we would only discuss our tactics before, 'As long as we do this, they can't beat us,' that's it.

When Arteta coached the Gunners later, while giving a speech in the team The picture said: The heart and mind must work together

"The way he (Arteta) prepares is: For example, against Watford, he will write down the names of Troy (Dini) and the players who work with him on the whiteboard, not PPT, and draw a big arrow to mark it. He runs here, he runs there, he retreats here, and we look at those arrows on the board. The entire explanation does not take more than five minutes.

"(We) never analyze our opponents. Even if we find obvious loopholes, such as the way the opponent handles two penalty kicks, we will at most practice additional relevant items, but the focus is always on ourselves: Where should we stand in set kicks and two penalty kicks? We have never used video data to study the opponent's tactics."