The South Korean was on target for Spurs in the 3-1 victory over Borussia Dortmund on Wednesday night and is rewarded with a starting berth tonight, linking up with Dele Alli as support for Harry Kane.
Ben Davies is the man to drop out as Mauricio Pochettino shuffles his pack to accommodate Son's arrival, with Kieran Trippier dropping into the right-back position and Jan Vertonghen moving over to the left.
Christian Eriksen, Moussa Sissoko and Eric Dier form the midfield, while Trippier and Vertonghen link up with Toby Alderweireld and Davinson Sanchez in the back four in front of Hugo Lloris between the posts.
Tottenham Hotspur: Lloris; Trippier, Alderweireld, Sanchez, Vertonghen; Dier, Sissoko, Eriksen; Son, Dele; Kane
Subs: Vorm, Aurier, Davies, Foyth, Dembele, Winks, Llorente
Swansea City: Fabianski; Naughton, van der Hoorn, Fernandez, Mawson, Olsson; Clucas, Sanches, Carroll; Ayew, Abraham
Subs: Nordfeldt, Rangel, Roque Mesa, Fer, Routledge, Narsingh, Bony
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