Benfica and Fenerbahce game is the biggest game left until the UCL starts. All other teams are smaller teams, and its unlucky for these two teams to face each other because if they faced some other smaller team then they both would be in UCL, so this is the biggest two teams facing each other, obviously a big deal. That is why the best thing for them right now is to try their hardest, because they can lose 8 games in UCL and still make more money than winning 8 games at Europa, that is the money difference.
If they win just ONE game, they are richer, that is a huge deal. Both these teams could use the money, its a big amount for them, maybe its not a huge amount for teams like Liverpool or Madrid or whatever, but for a team at Benfica/Fenerbahce level, it's a huge amount.
The match is going to be interesting, the first leg of the match ended goalless despite the match being played at Fenerbahçe's home, Benfica did a good job by getting a draw away, Benfica are very strong when they play on their pitch, and that means Fenerbache is going to be serious in this match if they want to win the match and qualify for the next round of the Champions League, both teams are capable of defeating each other, but Benfica have more chances to win the match. Although we're talking about football, which is unpredictable, if we look at their head-to-head encounters, they usually struggle to defeat each other, but Benfica always manages to win.
Jose Mourinoh did not take advantage of the opportunity to play at home to win the first leg of the match, and he wants to play in the Champions League competition this season, and he will go to any length to ensure his team wins the match, even if it is a penalty shootout, but Benfica is strong enough to beat them, and the match will be very tough with many cards.