As with most of Jesus's parables, the language here is very straightforward. When he starts telling a story,  his wordplay often goes away. The Greek is simple and he tends to repeat concepts, such as "man" and "householder" here, to clarify his meaning. Some ancient Greek manuscripts do not show the "a man". Of course, the statement creates a question in people's mind. How does this man relate to the kingdom?

There are two uncommon words here and both have a sense of "early". They are translated as "early" and "in the morning." However, the first word has more the sense of "at once." Neither related for the Greek word from "morning."