When did Jesus say that he wouuld return?

When did Jesus say that he would return?
Jesus said that he'd return before his disciples can preach throughout Israel.	Jesus said that he'd return after the gospel is preached throughout the world.
Mt.10:23 "Verily I say unto you, Ye shall not have gone over the cities of Israel, till the Son of man be come."	Mt.24:14 "And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come."