Marcelo Bielsa is wary of threat posed by Real Betis as his Athletic Bilbao side prepare to face the Verdiblancos on Monday.
Los Leones travel to Benito Villamarin to face Pepe Mel's side, and the Argentine Coach has claimed that his men will have to be on guard against a well-balanced Beticos.
“They are a good team,” he told a Press conference. “They are a very balanced side that can attack well and then also defend well at the same time.
“Mel has really crafted a good style of play there.”