Last year's MLS Rookie of the Year has had just two starts and two substitute appearances in the opening six games after being a regular starter last term.
Despite this fact, Olsen says that the 18-year old Honduran is still very much a key part of his DC squad.
"I have no doubt in my mind Andy is going to be a great player for us, and he's going to be a great player again this year," said Olsen.
"His job is to use the games he has to show me that he's ready to go when called on."
And Najar admits that he does not expect to start every game as there are plenty of players around him with quality.
"There is a lot of competition [for playing time in midfield] and my job is to just keep working hard to earn a spot," said Najar.
"Obviously, those are the coach's decisions and all I can do is work hard."