"There is a sense of anticipation with the new American ownership, especially among the fans," said the Spaniard.
"But the players feel it too. We know we need maybe two or three players to turn us into a side that will compete for the Premiership title. Our squad is not big enough.
"We have shown how good we can be in Europe, but we now need to go up a notch to compete with Manchester United and Chelsea in the league.
"We are closing the gap on those sides a little and with new additions to the squad it will help us step up again."