Of course, Mourinho's dismissal was due to his failure to lead Fenerbahce to qualify for the 2024/2025 Champions League league phase, a 1-0 aggregate defeat to Benfica in the playoff round was the reason Fenerbahce management terminated their cooperation with Mourinho. It seems Mourinho magic is starting to become ineffective in modern football, before joining the Turkish club, he was also fired by AS Roma in early 2024. Mourinho is not the first person to be sacked at the start of the 2025/2026 season. Previously, Ole Gunnar Solskjaer was also fired by Besiktas after failing to qualify for the UEFA Conference League phase.
I haven't seen much of Mourinho at Fenerbahce. But I don't think he's too bad. Last season they finished second in the league. But the defeat to Benfica and failure to qualify for the Champions League meant that this was the limit of the management's patience. It is reported that Mourinho recently criticized the club's board, transfer policy, and the quality of the squad. So I think the club also has the right to dismiss him because they are dissatisfied with Mourinho.
Mourinho always criticizes everyone without too many problems, it's his character, there are those who would say he is unpleasant because he wins, or rather used to win, now not anymore, in any case he is certainly in good shape in terms of charisma and what he transmits to the players is unique, just look at the bond he had with the players at Inter, you may not like it but lately he has lost a bit of his touch, however he remains a great coach.