Ajax v Juventus, Juventus into the semi finals.
Ajax did excellently to outclass Real Madrid and win 4-1 in the Bernabeu in the last round, but Real Madrid's cracks were only masked by being drawn in a weak group. Juventus are compact defensively, have much more experienced players than Ajax and they have the Ronaldo factor. Ronaldo may not be able to dribble past players like he used to, but his aerial ability alone with his huge leap and timing will be a huge threat to Ajax's young and inexperienced defense.
Ajax are also trying to challenge for the Dutch league title where they are currently in 2nd place, 2 points behind the league leaders PSV. Juve on the other hand have already practically won their league, so they can afford to rest players in their remaining league games and have their 1st choice players fresh for the Ajax games. Ajax will battle hard and they will create chances with their pressing game, but ultimately I think Ronaldo will punish them if Juve get half decent crosses into him.
Liverpool v Porto, Liverpool into the semi finals.
Porto have done well to get this far, but they haven't played any really good teams in the CL this season. They are a decent technical team, but they have not played a world class team like Liverpool yet. Their striker Marega in particular does look dangerous and impressive, but Liverpool's strong defense, their tireless midfield and their blistering forwards will cause Porto endless amounts of headaches. Liverpool should get through these games against Porto without many problems and I expect Liverpool to score a few goals trough their front 3, Mane, Salah and Firmino..
Tottenham v Man City, Man City into the semi finals.
As much as I hate to say it, if I use my head over my heart, I think that Man City will probably get past us in this game. Man City are on top of the EPL table and they are probably currently playing the best football they have played all season. Aguero is freely scoring goals at Man City and he's not the only one doing so, Sterling and Sane have also shown that they are also a scoring threat. De Bruyne, Mahrez and the 2 Silva's will also help create chances like they always do.
Having said all that, Spurs still do have a punchers chance if we play to our potential. If we defend well and we take our chances which we will no doubt have with Son, Kane and Eriksen, then we could reach the semi finals, this is very possible. But given the quality that Man City have, I will give an objective opinion and say that they will probably reach the semis as they are likely to create more chances than us and we can assume that they will take several of these chances. I would love Spurs to reach the semis, but I think Man City's strength will be too much, they are the favorites for the CL for a reason.
Man United v Barcelona, Barcelona into the semi finals.
Man United have done well this season winning games against PSG and Juventus in the CL, but I think this is where their adventure will end in this competition. Barcelona are not the bottlers that PSG have shown themselves to be in recent seasons. Under pressure, Barcelona usually deal with big games well. Messi will be a huge threat to Man United but so will others like Coutinho, Suarez, Dembele, Arthur and Rakitic. Man United have played very well and they have improved under Solskjaer, but I think this game against Barcelona is where their CL adventure ends.
Arsenal v Napoli, Arsenal into the semi finals.
Arsenal's defense has been awful at times this season and their away from in Europe has been terrible. Losing to Rennes away is one thing, but losing to BATE(Chelsea for example showed how easy it was to beat BATE home and away) as they did, is something entirely different. With that said, going forward, Arsenal are a real threat. Aubameyang and Lacazette are always going to be real threats and Ozil can still create chances for them when he is playing to form.
Napoli are good at home, but they have lost to teams like Sampdoria 3-0 and Austrian side Salzburg 3-1 this season. In fact the inexperienced young Salzburg team opened up Napoli's defense many times in both games against them, only for some poor finishing and some good goalkeeping by Napoli's keeper preventing them from scoring more. If an Austrian team like Salzburg can create many chances against Napoli, then Arsenal should be able to do the same, only Arsenal's strikers will surely score given such opportunities.
Villarreal v Valencia, Valencia into the semi finals.
Valencia will surely reach the semi finals in this all Spanish affair. Valencia are really on form, they have not lost in the La Liga since the 5th of January. They have not lost once in their last 14 games in all competitions and they have won 8 times in those 14 games. That is quite impressive form and they even drew 2-2 away to Barcelona in the league in February. They are also in the final of the Spanish Cup.
Valencia have a very compact and strong defense which is a crucial asset in knockout competitions as well. But they also have talented forward players like Rodrigo, Santi Mina, Gamiero and Cheryshev who I think will punish Villarreal and send Valencia into the semi finals.
Benfica v Frankfurt, Frankfurt into the semi finals.
Benfica are in 1st place in the Portuguese League and they are a very well balanced technical team who are tough to play against. Frankfurt though have shown this season what a force they are in the EL, they won all their group games and they have dominated teams like Marseille, Inter Milan, Shakhtar and Lazio to reach the quarter finals. Their performances and their form has been very impressive and their firepower in attack through players like Rebic, Jovic, Haller and Kostic should be too much for Benfica to handle.
Slavia Prague v Chelsea, Chelsea into the semi finals.
Chelsea have to be the favorites for the Europa League. They are hitting form at the right time and they have a lot of depth which should really help them in their cause to win the Europa League. Chelsea have played well defensively in the Europa League and when they attack they have looked very admirable.
Hazard, Wilian, Odoi, Pedro, Higuain and Giroud are real sources for goals in their team and their midfield and defense are starting to look strong too.Slavia Prague are a decent team from a weaker league, but ultimately Chelsea's strength should lead to an easy win against Slavia Prague.