The Argentine coach believes Sunday's opponents have improved a lot despite their league position as the Rojiblancos look to close in on Real Madrid
Atletico Madrid coach Diego Simeone believes his side's clash with La Liga strugglers Real Betis is a 'must-win' for both sides on Sunday.
With title rivals Barcelona and Real Madrid facing off at the Bernabeu later in the day, three points would see Atletico match their city rivals on points prior to the Clasico kick-off.
While Betis are in last place in the Spanish top flight, they have gone three league games unbeaten as their fight for survival intensifies.
And Simeone is all too aware of Betis' quality, despite the fact they sit nine points deep in the relegation zone.
"I expect to face a Real Betis team that has grown a lot under Gabriel Calderon's charge," Simeone told reporters.
"They've competed very well in their recent games. They surely suffered a tough blow last Thursday against Sevilla [in the Europa League].
"But they have improved in La Liga and that is what I look at. They have balance in midfield as well as toughness and intensity. So we obviously have to play the way we have until now.
"We hope to respond in the best way possible going into this hard fixture because of the rival's necessities. For them it's a must-win game. So it is for us.
"It'll be a game with benefits for both teams at stake. The aims are obviously different for each side."
Simeone's men are preparing for the ominous task of tackling Barcelona in their two-legged Champions League quarter-final, starting in April, but the Atletico boss is simply pleased that at least one Spanish team will be going to the final four.
"We'll face a Barcelona team that have reached the last six semi-finals of the Champions League. We are talking about the best," he said.