The 18-year-old is becoming a more regular figure in United's first-team squad under manager David Moyes following an impressive performance against Sunderland earlier this season.
Now, the teen starlet has been romantically linked with former 'X Factor' judge Tulisa, but at this stage, it remains gossip on Twitter, according to 101greatgoals.com.
Following the tweets, director of digital media at the Official Manchester United USA Supporters Club Kyle Diller wrote on the social networking website: "Rumor that Januzaj is dating Tulisa? United may not be entertaining on the pitch right now, but we've certainly become entertaining off it."
Tulisa, who previously dated Queens Park Rangers defender Danny Simpson, is six years older than Januzaj.