Lazio coach Maurizio Sarri says they must respond on the pitch ahead of their Champions League clash with Celtic.

Lazio go into the tie after a poor defeat to Salernitana.

Sarri said, “I don't want to have signals now, but tomorrow. We lost a match due to superficiality, due to lack of determination, in a bad way. So, the team must respond not in words, but on the pitch.

“I said what I had to say yesterday, now we need to regroup without going any further, hoping that the Champions League atmosphere will give us something more."

“Now there is no longer the old guard and the new. We need to reset. It's useless to talk about tactics, when a team enters the pitch less decisive than the other, they don't win. Tactics can help, but they are not enough."

On defeat to Salernitana, Sarri admits one director blasted the players in the aftermath.

“The director did it, in a very tough way. I'm happy about this, it was needed in my opinion."