Tottenham sent a number of scouts across Europe in order to run the rule over exciting young Holland international Adam Maher and South Korea striker Son Heung-min.
The Daily Mail believes that both players are of interest to Tottenham and that Andre Villas-Boas wanted to learn more about the players as he considers making offers for both players in the summer.
Spurs brought in two new players during the January transfer window, defender Ezekiel Fryers was followed by the arrival of midfielder Lewis Holtby, but as they push for Champions League football they may need to add more depth to their squad.
Villas-Boas is short of forward options with Jermain Defoe and Emmanuel Adebayor the only senior strikers in the squad. Youngster Harry Kane is also available but is untested, while Clint Dempsey can play as a forward but is preferred in midfield.
This may have led to scouts making the short trip to Craven Cottage in order to watch Son in action as South Korea suffered a 4-0 defeat at the hands of Croatia.
While the 20-year-old had a lack of opportunities to impress on the night, he is highly-rated in Germany where he has begun to force his way into the reckoning for Hamburg.
Hamburg general manager Frank Arnesen made it clear that they want to keep hold of the striker but admitted they may be forced to sell in the right offer arrived.
"Of course we have an acceptance limit," said the former Tottenham director of football. "But Sonny is a very young and great talent. We have the ambition to sign new terms with him and will be in a position to hand him a good deal.
"I am sure we can find a solution to keep hold of him for longer than the end of his current deal (which expires in June 2014)."
However, it seems that Son was the not the only player on Tottenham's radar as scouts were also believed to have travelled to Amsterdam to see Maher, 19, in action for Holland.
The Mail believes that AZ Alkmaar are prepared to sell the attacking midfielder in the summer and will be looking to receive an offer in the region of £10million.
Maher has scored five goals this season and has quickly forced his way into the Dutch squad after an impressive debut season for AZ in which he featured in 34 league games and scored five goals.