There could well be some significant movement at Arsenal come the end of the season, with several senior players likely to leave permanently despite having once been key for the Gunners. Aaron Ramsdale is one such player. The Arsenal goalkeeper has fallen down the pecking order at the Emirates Stadium after David Raya took his spot in between the sticks. Kieran Tierney is another such player. Previously a nailed-on starter at Arsenal, he has also fallen out of favour at N5, so much so that he was allowed to leave on loan last summer. The 26-year-old is currently playing for Real Sociedad. On F…