Heung-min Son's Tottenham Hotspur display highlights need for Fulham's Ryan Sessegnon

Mauricio Pochettino, manager of Spurs looks on prior to the Pre-Season Friendly match beween Tottenham Hotspur and Juventus at Wembley Stadium on August 5, 2017 in London, England.

Spurs boss Mauricio Pochettino wants to play with wing-backs; a system that should suit Fulham wonder kid Ryan Sessegnon perfectly.

Referee Martin Atkinson (R) awards a penalty after Tottenham Hotspur's South Korean striker Son Heung-Min (C) tackle during the FA Cup semi-final football match between Tottenham Hotspur...

Heung-Min Son did not exactly ace his audition as a left-wing back in April’s FA Cup semi-final against Chelsea. Chosen ahead of Ben Davies by Tottenham manager Mauricio Pochettino in order to target the space vacated by Chelsea’s rampaging Victor Moses, the decision backfired big-time.

Son dived in to give away a needless penalty against Moses and set Chelsea on their way to a 4-2 victory.

And while the South Korean speed machine did not cost Spurs a place in any cup finals on Saturday, his performance in the goalless draw with Swansea City at Wembley left supporters wondering why Pochettino appears to believe Son can do a job at left-wing back.

Heung-Min Son of Tottenham Hotspur attempts to get past Renato Sanches of Swansea City and Kyle Naughton of Swansea City during the Premier League match between Tottenham Hotspur and...

Starting in place of the rested Davies and the injured Danny Rose, the former Bayer Leverkusen forward spent the majority of the first half out of position and vulnerable. The fact he immediately improved when shifted to a more central role speaks volumes.

However, the likelihood is that Son would not have been forced to start in such an ill-fitting role had Spurs managed to get one of their primary transfer objectives ticked off during the summer.

The Telegraph reported in mid-August that Tottenham had made a £25 million bid for Fulham’s teen sensation Ryan Sessegnon, who looks every inch the ideal left-wing back at the age of just 17.

Ryan Sessegnon of Fulham battles with Kieran Trippier of Tottenham Hotspur during The Emirates FA Cup Fifth Round match between Fulham and Tottenham Hotspur at Craven Cottage on February...

The England Under-19 international is one of the hottest prospects around having exploded onto the scene last season with five goals and three assists in 17 Championship starts. And Sessegnon has been fielded in almost every position down the left this season, suggesting that he would have little trouble adapting to Pochettino’s wing-back system at Spurs.

Tottenham will likely return for Sessegnon in every transfer window until they get their man or he moves elsewhere. And Son’s performance against Swansea suggests that another move in January would not be the worst idea.

Register for TOTTENHAM HOTSPUR team updates

Register for HITC Sport - Daily Dispatch