Well, Clement Lenglet of course, but that just goes without saying.Which big exciting players were they?
More seriously, and I'm including the entire transfer window (also, as you are right to infer, probably being too liberal with the words "big and exciting"). Here are a number of interesting players Spurs either lost out on or just never bothered with (perhaps because they weren't represented by one of Spurs preferred agent groups).
My point is, how often do Spurs beat out one of the other big clubs for a player? Often times they can't even compete because the players don't want any part of coming to Spurs. And you've got situations like occurred with Luis Diaz where some other Premier League team just decides to step in at the last minute knowing Spurs can't or won't compete.
David Raya (supposedly on verge of signing, made unrealistic offer and lost out)
Pau Torres (discussed previous years, not sure about this year)
Declan Rice (never stood a chance at)
Ansu Fati (discussed, botched, beaten out by-----Brighton)
Sofyan Ambrabat (discussed previous years)
Mousa Diaby (really playing well, but apparently never in Spurs consideration)
Nicolo Zaniola (couldn't get it done previous years)
Alex Scott (outbid by Bournemouth)
Joao Pedro (hasn't met de Zerbi's expectations yet, but has looked good at Brighton in stretches)
Evan Joe Ferguson (never made a serious run at, eventually he'll end up at one of the big spenders)
Nicholas Jackson (can't believe Chelsea got him at 30 million)
Moises Caicedo (granted, what Chelsea paid makes no sense)
Josko Gvardiol (never got past the rumor stage a year or so ago)
Harvey Barnes (apparently a really unrealistic offer was discussed when he might have been available as part of the deal for Maddison)
Mohammed Kudis (don't think I ever heard mentioned)