That handsome chap is John “Soap” MacTavish, protagonist of all three Call of Duty: Modern Warfare titles. The caption, “Continue? [YES] NO” is a play off Soap’s fate in Modern Warfare 3. We’ll try not to spoil things too much if you haven’t played it, however.
Either way, it’s quite possible that Soap will be making an appearance in Call of Duty: Ghosts multiplayer in an upcoming Legends Pack as Captain Price and Vladimir Makarov did before him. Traditionally, the pack would offer the soldier skin, weapon camo, reticles, and other customization items.
Expect an official announcement soon.