The Champions League back: Everything you have to know in front of the current week's ties

Two months have gone since the draw for the last 16 of the Champions League and Europe's greatest challenge will at long last resume this week with four matches over Tuesday and Wednesday.

                                                          Manchester United vs Paris Saint-Germain

Manchester United host Paris Saint-Germain and Ajax play Real Madrid on Tuesday, while Tottenham Hotspur face Borussia Dortmund at Wembley Stadium and Roma have Porto on Wednesday.

Things have changed definitely since the draw as Jose Mourinho was supplanted by Ole Gunnar Solskjaer, who has given the group a certainty help.

Since his entry, the Red Devils have figured out how to stay unbeaten with eight triumphs and a draw, with 23 objectives scored and six surrendered, as they have toppled Chelsea's 11-point distinction and now sit fourth in the Premier League.

Paul Pogba has gotten eight objectives and helped another five, while Marouane Fellaini moved to the Chinese side Shandong Luneng in January.

Then, Paris Saint-Germain still lead Ligue 1, 10 points clear of Lille and with two recreations close by, despite the fact that Thomas Tuchel's side were wiped out in the Coupe de la Ligue by Guingamp.

PSG's serious issue, be that as it may, is the nonappearance of both Neymar and Edinson Cavani because of wounds as they will miss the primary leg between the opposite sides.

Thomas Meunier will likewise miss the up and coming amusement at Old Trafford, while Adrien Rabiot remains shunned in the wake of declining to reestablish his agreement.

Then again, Marco Verratti comes back from his damage and Leandro Paredes is prepared to delegate for the French club in Europe; there have been a few flights, as well, as Yacine Adli joined Bordeaux, and Timothy Weah and Jese Rodriguez went on credit to Celtic and Real Betis separately.

                                                                          Ajax vs Real Madrid

2019 has seen Real Madrid recuperate from their poor first 50% of the period, yet Ajax have not figured out how to start the new schedule year in style.

The Eredivisie break did not sit well with Dutch side, who have appeared protective issues regardless of having a promising focus back in Matthijs de Ligt.

They drew 4-4 against Heerenveen in the wake of taking a 3-1 lead, they were whipped 6-2 by Feyenoord, and lost 1-0 a weekend ago against Heracles.

Ajax completed the gathering stage undefeated, with three successes and three draws, and they tested Bayern Munich for the best spot in their last round of the gathering stage.

Frenkie de Jong concurred a late spring move to Barcelona, while the club marked Lisandro Magallan from Boca Juniors.

Then again, since the draw, Real Madrid have gathered 10 wins, two draws and two annihilations, and they likewise won their third back to back Club World Cup.

Los Blancos have seen Vinicius Junior - a key figure in their restoration - score four objectives and help another nine of every 1,220 minutes of activity, and they stayed unbeaten in consecutive away derbies at Barcelona and Atletico Madrid coming into this tie.

Kiko Casilla left the club for Leeds United, while Brahim Diaz landed from Manchester City, however Vinicius and Sergio Reguilon could be marked as the group's best 'winter signings'.

                                                                                   Tottenham vs B.Dortmund 

The English side spent another move showcase out of gear mode as they didn't sign a player for the second back to back exchange window.

Their two best players, Harry Kane and Dele Alli, are sidelined because of wounds and in spite of the fact that they were wiped out from both the Carabao Cup and the FA Cup, they have figured out how to remain in third position in the Premier League.

In the interim, Borussia Dortmund lead the Bundesliga, five points clear of Bayern Munich, and they have been confronting guarded issues as they have surrendered seven objectives which has prompted three back to back draws, one of which was a DFB-Pokal end by Werder Bremen.

Marco Reus has been discounted from the primary leg of the attach because of damage, while Dortmund achieved a concurrence with Chelsea for the takeoff of Christian Pulisic in the late spring.

                                                                Roma vs Porto 

A 3-0 triumph over Chievo Verona has enabled Roma to inhale a little less demanding after three back to back blows, most outstandingly the 7-1 rout on account of Fiorentina as they were disposed of from the Coppa Italia.

Nicolo Zaniolo has awed all through the season and the group expect a similar enhancement for youthful players such Justin Kluivert, Cengiz Under and Patrik Schick.

In the interim, a Taca da Liga last annihilation against Sporting CP finished Porto's notable dash of 18 wins in succession, and Benfica have additionally sliced the hole to the alliance chiefs to only one point.

Pepe has come back from Besiktas, while Fernando Andrade has as of late awed with his capacity to score from the seat.