First of all, congratulations to Fenerbahçe.
Fenerbahçe played a very good match tonight. They were very dominant in the first half, and despite falling behind 1–0, they turned the game around to lead 2–1 by halftime.
Their pressure continued in the second half, and they scored their 3rd and 4th goals.
After Feyenoord scored their 2nd goal, Fenerbahçe came under heavy pressure, but when they scored their 5th goal on a counterattack, they relaxed.

I don't understand why Mourinho didn't make any substitutions from the 75th minute until the final minutes. The team was so tired they couldn't run anymore, but he didn't make any substitutions until the 87th minute.

Fenerbahçe will face Benfica in the next round, and this time it will be tougher for them.