Atletico Madrid coach Diego Simeone is again keeping star striker Radamel Falcao under wraps in the Europa League as the Rojiblancos look to secure their spot in the last 32 against Academica.
Falcao has been the competition's top scorer for the last two years, helping both Porto and Atletico to lift the trophy in the process, but he has yet to be unleashed on this season's competition and will again be absent.
The in-form Colombia international is one of a host of senior players rested by Simeone for the short trip to Portugal, with seven of the players involved in Saturday's 2-0 defeat at Valencia omitted from an 18-man travelling party, including Diego Godin, Arda Turan and Juanfran.
That loss to Valencia ended Atletico's 13-match winning streak in all competitions, but they are still well placed in both La Liga, where they are second behind Barcelona, and in the Europa League, where they are on the verge of a place in the knockout stages.
Atletico have won a record-breaking 16 successive matches in Europe and another win tomorrow night would guarantee them a place in the next round, while even a draw would be enough for the reigning champions to progress if Hapoel Tel-Aviv fail to beat Viktoria Plzen.
Defender Filipe Luis has urged his side to take the positives from Valencia game, saying: ``We went a long time without losing but we need to remember how hard they had to sweat to beat us.
``It wasn't easy for them and we have to continue along this line, giving it everything like we have been doing. We have to learn from that game and continue working hard.''
Academica's hopes of progressing through could be sunk unless they can overcome Atletico, and their form this season suggests they could be in for a disappointing night.
Pedro Emanuel's men have won only twice in 12 competitive matches this term and have only garnered one point from their opening three Group B outings.
Despite that, Academica midfielder Alphousseyni Keita is not giving up hope.
He said: ``Anything is possible. We believe in ourselves and we're going to try and win all three games. We are highly motivated.''