Cesc Fabregas insists Spain “certainly won’t be changing our approach” to contrast Italy’s 3-5-2 system.
The Euro 2016 clash kicks off in Paris on Monday at 17.00 UK time (16.00 GMT) and the winners go on to face Germany.
“I think we are in very good shape, we’re a united group and all get along well,” said the midfielder in his Press conference.
“The most important thing is to win tomorrow and we know that we have to give our all to achieve that.”
These sides last met in a competitive match for the Euro 2012 Final, with La Furia Roja running out 4-0 winners.
“It was perhaps my best performance for Spain. Usually you don’t get to enjoy Finals that much and there’s a lot of pressure, the risk of penalties, but it was pretty easy for us and we had fun. It won’t be the same this time.”
There has been a great deal written about the fact Spain tend to struggle against sides playing 3-5-2.
“Italy are always difficult to face and in tactical terms even more so now, but perhaps we have a few more options in attack now. We certainly won’t be changing our approach to the game.
“Antonio Conte said we are the favourites? I don’t think so, as they have an excellent squad and a great Coach. He always knows how to surprise his opponents and studies them carefully.
“We can go through to the next round, but we’ve got to prove it on the pitch.”