Mohamed Elneny is the longest-serving first-team player currently on the books at Arsenal. Arsenal paid £5 million to sign Mohamed Elneny from Swiss club Basel in January 2016. The Egyptian midfielder has featured for the north London club under the charge of Arsene Wenger, Unai Emery, and Mikel Arteta. However, at no point has he been a nailed-on starter. In fact, to date, the 31-year-old has made just 89 Premier League appearances for the Gunners. He has 159 outings to his name when all competitions are taken into account. Discounting a loan spell with Besiktas in Turkey, Elneny is now in hi…