Eintracht Frankfurt will host Chelsea at the Commerzbank-Arena tonight (Image: Getty) Chelsea manager Maurizio Sarri will be hoping his side achieve a vital away victory this evening that would surely put them in good stead to progress to the final of lauded European tournament. However, the coach has admitted his squad is "in trouble" with regard to centre-backs; the London club currently only have two that are fit to start. Discussing squad injuries, Sarri said: "We are in trouble with the centre-backs. "We hope to recover him [Cahill] in one week." Although winning the Europa League would qualify the Blues for the Champions League next season, Sarri has admitted he would prefer to quality for the tournament through the Premier League. Related articles Hazard or Coutinho to Liverpool? Reds hero picks who he'd sign Eintracht Frankfurt vs Chelsea past meetings: Who came out on top? He said: "The Europa League is a very important trophy. "But we want to get to the Champions League through the Premier League. "It's very difficult to arrive in the top four in the Premier League." Ahead of tonight's away clash with the German outfit, the manger has warned of how "dangerous" Eintracht Frankfurt can be, especially at their home stadium. Sarri went on: "I respect Eintracht very much. "They have played against Inter in this competition, and Benfica. "They are a very dynamic team, with a great intensity. They play with the same characteristics as Slavia Prague, but the quality is different, especially in the offensive players. "They're really very dangerous at home, but also away. So, for us, it will be really very difficult to get to the final, I think." How to watch Chelsea vs Eintracht Frankfurt Eintracht Frankfurt will host Chelsea at the Commerzbank-Arena tonight with kick-off taking place at 8pm. BT Sport 3 (Sky 417, Sky HD 869, BT TV 410) will broadcast the game with coverage starting at 7.15pm. BT Sport will also be showing the match on desktop computers or laptops via the company's own site. The BT Sport enhanced video player is available online. But EE mobile customers will be able to stream the game for free thanks to a subscription plan announced by the network. Chelsea manager Maurizio Sarri will be hoping his side achieve a vital away victory this evening (Image: Getty) BT said: “To say thanks for being with us, here's a special sporting treat for our pay monthly mobile and tablet customers: three months’ free BT Sport on your EE phone and connected tablet. “Just text SPORT to 150, register for a BT ID then download the BT Sport app and get watching! “Loads of the UK’s best sporting action, on the UK’s fastest network.” You can visit the EE website for more information on the BT Sports offer.All rights reserved for this news site express.co.uk and under his responsibility