United triggered a 12-month extension in Shaw's contract last season to push its expiration to the summer of 2019 and his future at Old Trafford had been in doubt prior to the last two months after struggling for fitness and form for much of the last few years.
Shaw, now 23, declared in July that he wasn't ready to sign a new contract because he wanted to feel like he deserved fresh terms.
"For me personally, I don't think I would want to sign a contract right now. Because I want to prove to people that I deserve a contract," he said at the time.
"I want to earn a contract and I want a contract because I deserve a contract. I don't want a contract because maybe in the next year or so I'm a free agent, so maybe they might look to tie me down for that," the former Southampton star added.
It was later claimed in early September that Shaw still remained reluctant to enter talks, even though it was alleged he was in line for a pay rise to a £130,000-per-week deal.
Now, however, Bleacher Report's Dean Jones has stated via Twitter that talks are 'finally' underway. Given the chain of events up to this point, it would appear that Shaw at last feels has justified his place at Old Trafford after establishing himself as a regular starter this season.
Understand United are finally opening contract talks with Luke Shaw. Looks like things might be turning around for him at Old Trafford— Dean Jones (@DeanJonesBR) October 8, 2018
Shaw has played 90 minutes in seven of United's eight Premier League games so far this season, only missing the win over Watford last month after suffering a head injury while on international duty.
He has managed one goal, his first ever in professional football, and one assist and was named the club's Player of the Month for August and September.