"I'm not a friend of Florentino. I have four of five friends in my life, no more" said Rosell.
It is not the first time Rosell has come out with some controversial quotes this week, after he labelled last season's La Liga "strange" as his side finished second behind Real Madrid.
The 48-year old confirmed that Barcelona would not change their playing style, despite losing out in the Liga title race to their bitter rivals Real Madrid last season.
"We will go back and defend the values that define the club. What our opponents could do is immaterial... Whatever happens, we'll stay firm in our choice of a model that Barcelona fans can never give up."
Rosell also spoke about how any conflict between the two clubs should be dealt with: "If it begins with the president or the institution, I will deal with it. If it comes from the sporting director, Zubi will respond. If it's Mourinho, Tito will answer; if it's Iker, then Puyol."
He also had some harsh words to say about the Barcelona legend Johan Cruyff in the interview with Ara.
"I've tried to be his friend, but he's not particularly interested. I'm a fan of Cruyff, but the man who stopped being a fan is Cruyff himself."
And finally, on the pressures of being president of one of the largest clubs in the world, Rosell said: "The only pressure I have is when my daughters' teachers call me and ask me to come in for a meeting."