"I saw him as a bit selfish, someone who played for himself sometimes".
The England global has returned to form this season, however, and has now been rewarded with a lucrative new deal.
Whereas the Blues have made a magnificent start to the season, United desperately need a big win to get their campaign back on track.
Shaw's struggles dated back to his horrific leg break against PSV Eindhoven in a Champions League game in September 2015 which kept him out until April of the following year and at times left him wondering if he would ever play again.
The Gunners have won nine games in a row in all competitions, six of them in the Premier League, to close to within two points of the leaders. Two words: Eden Hazard.
Interestingly, only Manchester City (174) and Chelsea (142) have had more shots than Southampton in the Premier League this season (116).
"There are moments in which you see, and you don't even have to be inside that locker room to understand, just from watching that there is a disconnect".
He's been in and out of the Fulham side so far this season, but this weekend might be a handy time to have Ryan Sessegnon in your starting line-up with the Cottagers facing Cardiff.
You might want to think twice about having any Fulham defenders, though.
Which City players to pick?
And it's those club legends who have allegedly angered the players the most.
The 25-year-old midfielder was heavily linked with the Spanish giants in the latest transfer window, following a fantastic showing at the 2018 FIFA World Cup.
Sanchez has endured an indifferent season, his last-gasp victor against Newcastle a fortnight ago the first goal he has scored since April.
"People don't feel that pressure that those on the outside [press] do".
Another defeat wouldn't just realistically end United's chances of winning the title in mid-October, but leave a mountain to climb just to make it back into the top four.