Some top signings as were expected and without being a CL club, show ambition and players will buy into it.
If you're going to compare that to our own difficulties signing top players without the CL, you've got to stick a big "£90m for one player" asterisk on there. If someone plopped that much money in our laps, I'd wager we'd have a much easier time getting players like these as well.
It's really going to be interesting to watch how this experiment unfolds. And it is an experiment - pile essentially an entire 1st team worth of players together in one summer and entrust them to a young manager who's yet to
really prove himself at the top level. It certainly could end up being fantastic, and for the next twenty years people'll be talking about how Spurs traded one player for a multi-title-winning team. They certainly look great on paper.
One thing that I figure, though, is that Lamela, Eriksen, and the other young players they've bought will likely wind up not turning out quite as well as they might have had they gone to more stable clubs. However long it takes the team to gel together might basically count as a period of stagnated progression. Either that or it'll build character and they'll all be worth £90m within a year and Spurs will buy 35 new players to replace them.