The likes of Bukayo Saka, Reiss Nelson, Joe Willock, and Eddie Nketiah have also seen significant game time this season.
And Mertesacker wants to keep producing players for the Spanaird.
"He must be thinking, 'What's going on in the academy?' Every year there is the potential two, three players who can step onto that court.
"But I know his standards, I know what he stands for, so I need to prepare the players really well so when they step into the first-team environment they are ready and prepared."
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