Gomes is preparing to meet Mourinho's former club Manchester United in the FA Cup this weekend.
He said of his fellow Portuguese, "He's a great coach, it's very difficult to achieve what he did. I don't know what happened [at United]. I respect him and, for Portuguese coaches, it's important everything he achieved, but Manchester United decided differently.
"They are playing good football, the players are happy to be playing like they are.
"It's a new manager with different ideas, more freedom for the players. The players are showing they are comfortable in this situation with this freedom."