Borthwick-Jackson, who is due to spend the season at Elland Road, was named in Thomas Christiansen’s starting XI for the first time since October.
Unsurprisingly, he looked rusty at left-back and was replaced on the hour mark for skipper Liam Cooper.
As League Two side Newport fought back to claim a famous win, angry Leeds fans took to Twitter to demand Borthwick-Jackon’s return to Old Trafford.
One supporter said: “Send Borthwick-Jackson back to scum he’s f****** s****.”
Another said: “Hopefully the last we see of Borthwick-Jackson. Absolute rubbish.”
While a third added: “Borthwick-Jackson might have the talent, but he’s got a f****** s*** attitude and shows no interest whatsoever.”
One furious fan said: “Never want to see Borthwick-Jackson in a Leeds shirt again. Bone idle.”
Another added: “Borthwick Jackson is not a professional footballer. Hilarious that he’s on the books at Man Utd, they must be desperate.”
While another supporter said: “Anyone up for a Crowd Funding page to send Borthwick-Jackson back to scum.”
Leeds have held talks with United about cancelling the loan agreement.
Borthwick-Jackson has not featured for Leeds in a Championship fixture since his debut against Preston North End in August.
Reading are reportedly interested in signing the 20-year-old if his Leeds deal is scrapped.
Leeds appeared to be on the verge of reaching Round Four thanks to Gaetano Berardi’s first ever goal but Conor Shaughnessy’s own goal and Shawn McCoulsky’s late header earned Newport a famous win.
Samuel Saiz was sent off in injury time for an off-the-ball incident.
