Basle still a threat, warns Mata

Juan Mata has warned Chelsea of the dangers of Basle and complacency as the Blues bid to reach a European final for a second successive season.

David Luiz’s stoppage-time free-kick in Switzerland last week earned Chelsea, last season’s Champions League winners, a 2-1 first-leg advantage in their Europa League semi-final with the Swiss champions ahead of tonight’s return at Stamford Bridge.

“It’s going to be a dangerous game,” Mata said. “Even though we have two goals away, a great result, it’s that kind of game that can be very risky.