Clinching that last CL spot must have helped - he was also seeking assurances regarding new players and strengthening the team. With Kane looking likely to remain at the club as well, Spurs will be dangerous next season too.
Spurs may be dangerous next season but by and large they will again be fighting for 4th place and if United get things right the competition will be even tougher than this season. And then there is Newcastle, which has the potential to fly very high. The Premier League is becoming a very tight league
As we can see, English Premier League clubs have a very high motivation next season in improving their performance.