Arrow Season 4 Synopsis with few spoilers

Promoting next season of Arrow at Comic Con, the network executives have released an official description of next season, with very few spoilers.
After defeating his most formidable foe to date and riding off into the sunset with longtime flame Felicity Smoak, Oliver Queen (a.k.a. The Arrow) left Starling City with the hopes of beginning a new life. But will Oliver ever truly be able to leave behind his past as the Arrow, and, if so, what becomes of the team he has worked so hard to assemble? Will Diggle, Thea, and Laurel be left to continue Oliver’s crusade without him? And with Malcolm Merlyn having ascended to the top of the League of Assassins as the new Ra’s al Ghul, is anyone really safe? From Bonanza Productions Inc. in association with Berlanti Productions and Warner Bros. Television, Arrow airs Wednesdays at 8/7c on The CW.