Fonte believes that it is vital for the club to bring in new talent this summer in a bid to push for the top six next season.
According to the Daily Echo, when asked if this is a crucial summer for the Saints, Fonte said: "Yes, definitely so. We will wait to see what is going to happen.
"Of course [top six] is the aim, but we need to see what happens this summer. If the club decides to go for it or not.
"We want to be successful and to push forward for better things so let's hope that they can match the ambition of the players."
Southampton are currently eighth in the table on 52 points with two games left to play.