"He ended up top scorer and then got his move to Manchester United".
Mourinho also confirmed left-back Luke Shaw could return to action at Vicarage Road just a week after suffering a concussion in England's Nations League loss to Spain.
At just 18 years and 141 days, he became the youngest scorer for United in European competition and landmarks and records tumbled after that: scoring on his debut in the Premier League, the Champions League and League Cup, and in his first appearances for the England Under-21s and the England senior team - the youngest player to achieve that. First, there's a three-match suspension to serve after getting a red card in United's last Premier League game for aiming a headbutt at an opponent soon after coming on as a substitute.
Since the start of the 2016-17 season, 20-year-old Rashford has played 5,866 minutes in all competitions.
Like with so many others in the England squad, though, that confidence can only be maintained if Rashford plays for his club, no matter what he has achieved so far and the impressive comparisons he has drawn.
Romelu Lukaku is in front of Rashford and I don't see Rashford displacing him as long as he is there.
"We know how exciting he is", Southgate said after the game against Switzerland. Starts on the wing might be scarce, too.
European Union to give internet firms 1 hour to remove extremist content
He called on member states to "revive the lost art of compromise", insisting that this was the not the same as a weakness of convictions.
Jose Mourinho has launched a remarkable defence of the way he uses Marcus Rashford, reeling off a list of statistics as the Manchester United manager lashed out at "obsessed" pundits. He doesn't look at home on the right wing.
'In the season 16-17, Marcus Rashford played 32 Premier League matches and 11 Europa League matches including the final.
When given the opportunity to play, Mourinho has put Rashford out on the wings to try and take advantage of his pace but most believe this to be hindering his development. There's no outward sign of any resentment from Rashford, but will he continue to be content being a so-called "super-sub"?
Those performances led to questions around Rashford's playing time at United, with former Liverpool defender Jamie Carragher saying he needs to leave if he ever wants to develop into a world-class striker.
"Since I was here, he was never one day out of selection because of my decision, only if he was injured or suspended".
"Young players sometimes say things that they later regret".
Going forward, those occasions might be for England more than United.