Manchester United starlet Adnan Januzaj is being urged to consider his options at Old Trafford after being side-lined during the opening weeks of the season.

The 19 year old has been used as a substitute in each of United's four Premier League games, in stark contrast to his impact last season where he was a rare positive during David Moyes' disastrous campaign in charge.

The record-breaking addition of Angel di Maria has seen Januzaj's starts this season restricted, while should Louis van Gaal continue with the midfield diamond which excelled against Queens Park Rangers, the Belgian international could continue to be marginalised.

And Keith Gillespie, an ex-United winger who while being part of the Class of '92 was forced out of the club at 19 years of age due to the form of Andrei Kanchelskis and Ryan Giggs, as well as the emergent presence of David Beckham, says Januzaj might have to look elsewhere for appearances.

"Unfortunately, with the embarrassment of riches Manchester United have at the moment, he's not first choice," he told the Manchester Evening News.

"He's still young though and is learning the game. He needs games to bring out his potential.

"Last season was very poor for United, but he was probably the one shining light in a team which didn't perform.

"Just look at the players in the team now, the likes of Angel Di Maria, Juan Mata, Wayne Rooney, Robin van Persie, and Radamel Falcao.

"He's a winger and I'm not sure he can adapt and play as a wing back. He needs to play further forward. It's very difficult to fit him in to the system."

Januzaj attempted to catch the eye of van Gaal by scoring a hat-trick in the 4-0 Under-21 win over Sunderland on Monday, and having signed a five-year deal last season is unwilling to give up on becoming a regular this term.

"I tried to do my best," the teenager said. "Obviously, even if it's reserves level, I always have to show myself and improve. I got a hat-trick but I think I worked hard defensively as well and these are the kind of things I have to do now and at first-team level," Januzaj said.

"Of course, I played a lot of games last season and I'm trying to impress the manager once again and get games again this year as well."