You are more likely to win a trophy at Spurs right now than Everton.They are big yeah, but not a top club. They haven't won a title in longer than us.
You don't join spurs to win trophies
In the last 10 years, we have finished above them once - in 2013-14, when we finished 5th and they, with Tim friggin Sherwood and before Kane burst into the team, finished 6th. That 13-14 season is by far our best season of the last decade too, which is the sad thing. Spurs were maligned for being crap and wasting the Bale money that year.
They've since reached three finals (2 in League Cup, 1 in CL) and a further 4 semi-finals. In that time Everton have reached 2 semi-finals - both in 15-16.
So by definition he is more likely to have success there than here.
He also wants to play in the Champions League, which seems to be as important to a lot of players as winning a domestic trophy. Spurs have qualified for it 4 times in the last decade, and have been in Europe each season too.
Right now, they have a world class manager, have money to spend, are in the CL again and have two of the world's best strikers in Kane and Son. Everton just finished 16th and have hardly got a pot to p*** in