"It's not my business to interfere with club managers, they have a hard job to do and they have big squads at the top six, huge competition for places".
Three Lions striker Marcus Rashford seems to have hit some form in the past week, finding the back of the net against Spain and Switzerland and taking his worldwide goals tally to five.
"For me, it's the biggest club in the world, and I think he's got the potential to be one of the best". "For me, I was delighted because we really wanted to make him feel important over this period anyway".
And Rashford has been told that he must leave United in order to be considered as a first-choice striker for England. "He's got huge competition for places at his club, so you can understand (his frustration)".
"His confidence will be boosted I'm sure, two goals against top-quality opposition in both games".More news: Trump comments sting in Puerto Rico amid slow storm recovery
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The Wythenshawe-born forward was sent off for United in the club's final fixture before the global break, a comfortable 2-0 away victory against Burnley.
Southgate is confident that Rashford's spell away with England will have raised his morale, as he also netted in the 2-1 Nations League defeat against Spain on Saturday.
The England manager hopes that the intensification of the domestic season, with some clubs competing on three fronts as Europe fully kicks in next week, will mean that they get opportunities.
Rashford subsequently went to Euro 2016 as England's boy wonder but only played a cameo role in that tournament and was then largely a substitute at this summer's World Cup.
"To get two goals this week, two really good finishes, is really important for him".
The 20-year-old played the entire 90 minutes in both games and he should return confidently as United must reduce the gap to the leaders in the Premier League.