Hernanes warned Inter not to underestimate Europa League opponents Stjarnan. “Anyone can hurt you.”
The Nerazzurri travel to Iceland for the first leg of their play-off on Wednesday evening.
“It will require great concentration,” the Brazilian told Inter Channel.
“The results I saw in Brazil over the last few days were shocking. You must give it your all in every match, otherwise anyone can hurt you.”
Inter have struggled in recent friendlies, losing 3-1 at Eintracht Frankfurt and drawing 0-0 with PAOK.
“I expected us to hold out for just about 45 minutes, but I played a little more. My legs are starting to move better now and in the second half I had a lot of energy left, despite the tiredness.
“I think we will reach the Europa League tie in good condition. I worked hard and remained sharp, though it is inevitable to feel tired at this stage of the season.”