By Michael Searles For Mailonline
Published: 15:55 BST, 1 September 2018 | Updated: 15:55 BST, 1 September 2018
Former Arsenal captain Per Mertesacker watched over the Gunners' U18 side on his first day as the new academy manager.
Mertesacker watched the young Guns play Chelsea at their training ground in London Colney on Saturday.
The German agreed to take on the role last year, before announcing he would retire from