If the match confirmed what Southgate knows about Rashford, it also showed the England manager that there is clear daylight in the pecking order between Jordan Pickford and Jack Butland.
Among the starters looking to stake a claim for a regular berth up front was Marcus Rashford, who was paired up top with Danny Welbeck.
Southgate's keenness for his players to be competing at the top level is clear, with the 25-year-old the only member of the squad now playing outside the Premier League.
Maguire joined Leicester in 2017 and, after winning the joint-most aerial duels (41) the tournament, was one of the star performers for England this summer as Gareth Southgate's side reached a first World Cup semi-final since 1990. Over at Old Trafford, however, he has only managed three goals since March.
Southgate insisted after being outplayed for the majority of a 2-1 defeat by Spain in his side's inaugural Nations League encounter on Saturday that England must persist with his intention to improve on playing out from the back under pressure.More news: White House says everything is fine, though signs point otherwise
Overrun in midfield and shaky in defence, the determination to play out from the back nearly cost them in the opening stages. "It was important then that we solved a couple of the problems they were facing and kept things calm", Southgate said.
"They understand it is hard to pick players if we are seven, eight weeks into the season and they are not playing". Even with some of the step-overs and things [Cristiano] Ronaldo was doing at that age he wasn't converting them into the number of goals, so we have to give him [Rashford] time to develop.
So, take a look at the slideshow above to see which players we feel were fortunate to wear the three lions as one of England's elite.
England struggled to get Loftus-Cheek on the ball in unsafe positions in the first half and when they did, he was unable to do much with it, often showing an inability to turn when presented with the ball with his back to goal. "I'm fit and training well".