Tottenham Hotspur are known for sacking their coaches either towards final of a competition or after the finals irrespective of performance. It didn't surprise me that Postecoglou has been shown the exit door despite winning for them the Europa trophy after all these years of going trophyless. They did same to Jose Mourinho when he was manager there, after taking them to the finals, just few days to the game he was sacked. Lol.
They did not the same with Jose Mourinho because Jose brought them to a final match but he was not give an opportunity to finish the final with them. They sacked him one or several days before that final match and what they got after all, they lost the final.
Postecoglou actually was more lucky than Jose Mourinho even Tottenham Hotspur had considerable worse performances in this season compare to what they did with Jose Mourinho years ago. Anyway Tottenham Hotspur won a first title after 17 years with Postecoglu and after that they sacked him but this decision is explainable after a terrible season in Premier League with Postecoglu.
Tottenham Hotspur have been competitive this season, we watch them been ranked close to the relegation zone in the EPL and also winning the Europa League title. Spurs winnings Manchester United in the Europa League final beats my imagination, we know it's been rough for the club over the years but there are vast numbers of believers that the club will rise again with winning a major title. Tottenham Hotspur headcoach, Ange Postecoglou has been the only manager that have been there for the club since been appointed for the managerial role. He's important for the club and this particular knows his place.
They seemed to aim at a better season in Premier League and by recognizing that Postecoglu can not help them improving performances in the domestic league, they made a hard decision. By winning UEFA Europa League title, they will participate in Champions League and this makes more pressure on their squad next season. This is possibly another reason why they felt that it's unsafe and also risky to continue with Postecoglou.