Son was the most unsafe player during Tottenham's control of the ball in the opening 20 minutes, with goalkeeper Jonas Lossl doing well to save at Harry Kane's feet after one of the former Bayer Leverkusen man's driving runs down the left.
On Huddersfield's right side, Quaner had been suffering a nightmare against Son and he did not look happy at being replaced by Tom Ince in the 33rd minute. Not really. After watching the first 70 minutes of this contest from the bench and remaining fresh, Lamela is likely to again start against Juventus on Wednesday - and that is the more exciting and glamorous match.
Tottenham can move up to third in the Premier League with victory over Huddersfield at Wembley.
In that respect, a two-goal defeat wasn't too painful.
Christian Eriksen stung Lossl's hands as Spurs pressure began to build, and they finally broke the deadlock 27 minutes in, with Son rounding the goalkeeper before drilling home left-footed after Dele Alli's pass sent him clean through on goal.
Huddersfield are one of about a dozen teams still in danger of relegation.
However, he continues to be a key man in the final third and it was he who laid on Son's opening strike with a perfectly-weighted through ball.
"Sometimes you just need to speak to your manager to get a few days off because your body will need it".
Moura has so far started the FA Cup fifth-round matches against Rochdale and made brief cameos from the bench in the Premier League and Champions League, having joined Spurs for £24.5 million on deadline day from Paris Saint-Germain, where he had made just six substitute appearances all season.
After a barren seven months at Paris Saint-Germain, Brazilian worldwide Lucas Moura has stated he delight at joining Premier League giants, Tottenham Hotspur.
The Sky Sports pundit believes that David Wagner's side will have a much better chance if they try to spring a surprise against Spurs and try to push them back in their own half.
Pochettino said Spurs will approach the Juventus game as they did the first leg in Turin.
And this was a nice warm-up for Wednesday's vital Champions League date here against Juventus.