Considering the state of football at Tottenham and Dempsey's career crossroads, this move is great for both sides.
First off, Spurs love to counter-attack. With the blistering pace of Gareth Bale and Aaron Lennon, coupled with forward-thinking full-backs Kyle Walker and Benoit Assou-Ekotto, Spurs are lethal on the outside. They move forward as quickly as anyone in England, they just need finishers and creative players in the middle.
Last year, they found their finisher in Emmanuel Adebayor. He's back this year, but he isn't nearly enough. With Luka Modric and Rafael van der Vaart gone, Spurs needed a midfielder that could help the attack in the middle of the pitch.
Last year, he had the best season an American has ever seen in England. He scored 17 goals in the league, which was good for fourth-best. He's a multi-talented goal scoring threat, which is exactly what Spurs need.
Given Dempsey's great form and Fulham's style, it's reasonable to think that he will struggle to match his goal tally from last year. However, by entering into Tottenham's quick counter-attacking system, he could find himself matching that total.
Initially, it looked like Dempsey would be playing on the outside, rotating with Bale and Lennon. Now, though, it looks like he could drift a little more inside, simply because Spurs don't have any other options.
In a more central position, Dempsey will be a great facilitator. He's quick and creative on the ball, which will give him the necessary time to find his teammates. Given his attacking mindset, he'll be a great link from the defensive midfielders to the strikers and wingers.
Dempsey has already had a very good career. He is the most successful American field player at the club level, and he wants to set the bar even higher.
Moving to Spurs will only improve his legacy.