Manchester United are considering signing two central midfielders in January.
The Red Devils are reeling with the news that Scott McTominay and Paul Pogba will be absent for the foreseeable future.
And a report from ESPN suggests United will look for reinforcements in the market this month.
They could sign Can from Juventus on loan, as he has only played 270 minutes for Juventus this term.
Any move for Longstaff would be a lot more complicated, as Newcastle would demand a high fee for their talented youngster.
United tried to sign him in the summer, but were quoted exorbitant fees and backed away.