Final score: Liverpool 0-0 FC Porto (aggregate: 5-0) Job well done by Jurgen Klopp and his men as they put in a professional performance to see out the second leg against FC Porto with minimum fuss and guarantee their place in the quarterfinals. Liverpool, as expected, made some alterations to the starting eleven while Porto did the same. Sadio Mane hit the post in the first half whereas Danny Ings came agonizingly close late in the game. But Porto held on to get something out of this tie and managed to restore some pride after the first leg demolition. On that note, here are the five talking points that emerged from a subdued 0-0 draw at Anfield: #5 Jurgen Klopp rings in the changes Van Dijk was rested for the second legWith a crucial league tie awaiting the Reds on Saturday against Manchester United and with the Champions League clash against FC Porto already in the bag, Klopp was expected to make a host of changes to his starting lineup. Understandably, the manager made five changes from the side that beat Newcastle United on Saturday.Virgil Van Dijk was given a complete and a deserved rest on the night which was also the case with Andrew Robertson and Trent Alexander-Arnold. Mohamed Salah was introduced late on as a substitute whereas Alex Oxlade-Chamberlain was also given a complete rest. Liverpool should have also given Roberto Firmino a breather with Danny Ings and Dominic Solanke capable and waiting in the wings. He was taken off at the hour mark but a proper rest could have been a better thing to do. Liverpool did not have to get into their usual gear and with no injury concerns on the table, the Reds should be ready for the big one against United.