The UEFA Champions League is back in action this week with an important group match as Villarreal take on Atalanta at the El Madrigal Stadium on Tuesday. Both teams have improved over the past year and will want to win this game.Villarreal edged Manchester United to a UEFA Europa League victory last season and will be intent on making their mark in Europe's premier competition. The Yellow Submarines have had their fair share of problems this season and will need to work hard against a strong opponent.Atalanta suffered a shock defeat against Fiorentina over the weekend and also have a point to prove in this fixture. La Dea have been effervescent under Gian Piero Gasperini and will want to take Europe by storm this year.📸 𝙋𝙃𝙊𝙏𝙊 𝙂𝘼𝙇𝙇𝙀𝙍𝙔👉 https://t.co/gdftR4Qp58#AtalantaFiorentina #GoAtalantaGo ⚫️🔵 pic.twitter.com/vo0axQeoWD— Atalanta B.C. (@Atalanta_BC) September 12, 2021Villarreal vs Atalanta Head-to-HeadVillarreal have never played an official match against Atalanta and will have to adapt to a new opponent this week. Gasperini's charges employ a unique approach to the game and will want to take the Spaniards by surprise on Tuesday.Atalanta have experienced slumps in recent months and cannot afford to take Villarreal lightly this week. Both sides have a point to prove in the UEFA Champions League and could potentially become dark horses this year.Villarreal form guide: L-D-D-D-LAtalanta form guide: L-D-W-D-WVillarreal vs Atalanta Team NewsVillarreal need to be at their bestVillarrealSamuel Chukwueze is injured at the moment and will be unable to play a part in this fixture. Gerard Moreno is also carrying a knock but should be able to feature in this game.Injured: Samuel ChukwuezeDoubtful: NoneSuspended: NoneAtalanta have a point to proveAtalantaHans Hateboer and Luis Muriel are injured and will be unable to play a part against Villarreal this week. Atalanta have a strong squad and will need to field their best team in this match.Injured: Hans Hateboer, Luis MurielDoubtful: NoneSuspended: NoneVillarreal vs Atalanta Predicted XIVillarreal Predicted XI (4-4-2): Geronimo Rulli; Pervis Estupinan, Aissa Mandi, Raul Albiol, Juan Foyth; Etienne Capoue, Manu Trigueros, Alberto Moreno, Yeremi Pino; Boulaye Dia, Gerard MorenoTomorrow we're in @ChampionsLeague action 🙌!And this is how we start the group 👏. #UCL pic.twitter.com/18plBjtH41— Villarreal CF English (@VillarrealCFen) September 13, 2021Atalanta Predicted XI (3-4-3): Juan Musso; Berat Djimsiti, Jose Luis Palomino, Rafael Toloi; Robin Gosens, Joakim Maehle, Remo Freuler, Mario Pasalic; Ruslan Malinovskyi, Josip Ilicic, Duvan ZapataVillarreal vs Atalanta PredictionVillarreal have been impressive over the past year but are yet to win a league game this season. Unai Emery has plenty of quality at his disposal but will need to make his unit click on Tuesday.Atalanta have also been underwhelming in the Serie A this season and cannot afford similar performances in the UEFA Champions League. Both teams have problems to solve this month and are likely to play out a draw on Tuesday.Prediction: Villarreal 2-2 Atalanta