One Arsenal ace is now set to leave the club at the end of this season with West Ham United ready to secure his services for themselves. Arsenal have opted not to hand professional terms to one Hale End academy ace. 18-year-old defender Luis Brown will leave Arsenal this summer. As reported by Arsenal youth expert Jeorge Bird, Brown will depart the North London club at the end of June when his scholarship contract expires. The teenager is currently on trial with West Ham United, who are expected to offer him a deal. Brown has been on the books at Arsenal since under-nine level, and has captain…