It is very reasonable for the team management to fire the coach because Tottenham ended the Premier League in 17th position which is very close to the relegation zone. So the steps taken were quite wise steps by Tottenham management because they clearly doubted if they still continued to maintain the coach for the next season. And for a more logical reason, Tottenham will find it difficult to compete in the Champions League if they still use the coach and players who have minimal contributions to the team.
Tottenham management sees the competition in the next season which will be quite difficult for them if they do not make major changes. Replacing the coach and some players will definitely leave the team. While those who will be brought in will also definitely be new energy for the team to improve their performance in the competition in the next season.
There must be dissatisfaction from the club management with their coach over the results obtained. They certainly will not be able to compete in the Champions League if they continue to make changes.