South African Delron Buckley has emerged as a Tottenham target.
The 28-year-old only moved to Borussia Dortmund last summer after a highly impressive campaign at Arminia Bielefeld - where he was one of the top scorers in Die Bundesliga.
Buckley has again done well, but Borussia's system means he cannot get forward as much and as a result the goals of dried up.
A number of scouts, including one from Spurs, have been taking in his displays recently and now it is understood Buckley is being seriously considered by Martin Jol and his staff.
German reports claim that Buckley, despite having three years left on his current deal, could leave Borussia for less than £2 million.
His representative Rob Moore admits Tottenham would be an interesting option, but denies knowing of any contact.
"Delron is under contract for three more years and is playing well," Moore told skysports.com.
"Tottenham would obviously be an attractive proposition for any player.
"But we cannot comment on what at the moment is just pure speculation."
Tottenham's left side is one of their problem positions, with the right-footed Aaron Lennon currently filling the void.
Spurs have previously been unsuccessful with bids for Middlesbrough duo Stewart Downing and Adam Johnson and so with Andy Reid looking unlikely to be the long-term option - at least one left winger can be expected to arrive at White Hart Lane this summer.
While coach Martin Jol will no doubt be signing quite a few players - there will also be a number of departures.
Goran Bunjevcevic, Noureddine Naybet and Johnnie Jackson are all expected to depart, while the futures of Stephen Kelly and Jermain Defoe remain in doubt.