The winger joined on a season long loan deal this summer.
The winger joined the Black Cats on a season long loan from Manchester United last week, reuniting with Moyes once again.
He is hoping the recapture his form and get his career back on track after a frustrating two-year spell under Louis Van Gaal that saw him shunted to the sidelines.
David Moyes with Adnan Januzaj
Moyes was the man who gave Januzaj his debut at Old Trafford, with the Belgian being of the high points of the Scot’s ill-fated reign in Manchester.
And Januzaj says he is hoping he can have a positive influence once again as he looks to make an impact this season.
“The manager has given me the opportunity to come here and prove myself again,” he told the club’s official website.
“I’m looking forward to working with David Moyes again. I always enjoyed playing in his team with the freedom and the confidence he gives me. Once you have that you can do things and make things happen.”
David Moyes talks to Adnan Januzaj
It now remains to be seen if Januzaj can recapture his form at Sunderland this season and get his career back on track.
There is no denying that things have stalled for him in recent years at Old Trafford so this move is likely to be a wise one for all parties.
Sunderland manager David Moyes before the match