I honestly wish to favour Benfica on this, I see them as a team that will want to utilise their home advantage to the maximum and they have a good squad by the way, this is not to make anyy less of Fernabahce, but only that from my perspective I see that Benfica is at advantage, one in which they are not willing to let slide but Fernabache will make it a tough one for them and be sure to expect a goal from both sides.
Benfica is a team that frequently plays in the Champions League, and vice versa for Fernabache. Personally, I prefer Benfica because I see this team always gives me hope when I place a bet, but Fernabache is also a team that can trouble them even at home. This time, I see a different opportunity, and perhaps Fernabache could beat or draw with Benfica, so betting on it might be a bit riskier, but if you dare to take the risk betting directly for Benfica to win is also good.