Whatever changes Jose Mourinho made against Leicester City on Saturday, they clearly worked.
Goals from Chris Smalling, Juan Mata, Marcus Rashford and Paul Pogba in the first half saw Manchester United blow away the Premier League champions in a fashion reminiscent of the Sir Alex Ferguson era.
Many have pointed towards the dropping of Wayne Rooney as to why such a result was made possible, but one alteration couldn't have had such a big effect.
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Perhaps it was Rashford starting the game? Or Smalling being reinstated at centre-back?
Whether United can build upon the 4-1 victory at Old Trafford remains to be seen but for club legend Gary Neville, it's playing Zlatan Ibrahimovic and Rashford alongside each other that's the way forward.
In the pundit's opinion, the striking pair should be partnered together up front.
Speaking to Sky Sports, per Goal, he said: "Zlatan Ibrahimovic and Marcus Rashford seem to be a fit.
"Ibrahimovic is clever enough to find the runs of Rashford. Rashford is clever. He isn't just a runner and a finisher.
"Those two could eventually end up playing together."
Rashford started on the wing against Leicester over the weekend but there's certainly an argument to be made that he should be playing as a striker.
His goalscoring record speaks for itself and, if played alongside someone of Ibrahimovic's ability and experience, the 18-year-old would undoubtedly reap the benefits.
As Neville mentions, Ibrahimovic is capable of holding the ball up and feeding the more agile Rashford, who can latch on to through balls using his blistering pace.
The same tactic can be used with Rashford on the wing, of course, but to less of an extent.
According to the England international, though, Ibrahimovic has already had a positive impact on his United performances - without even speaking to him.
While playing FIFA 17 with YouTuber Spencer Owen, Rashford revealed how he keeps a close eye on everything his 34-year-old teammate does on the pitch.
He said: "He's probably helped me improve more than what he thinks.
"Without even saying anything, just me watching him, his hold up play and how he dictates his game. There's a lot more to learn."
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