Zlatan Ibrahimovic believes Paris Saint-Germain can make an immediate impact at home and in Europe this season, while former Parisiens star Ronaldinho is also hoping the club will be successful.
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PSG only managed a 2-2 draw with Lorient in their first game of the new campaign last week, with Ibrahimovic - the highest paid in French football history on a salary of €14 million per year - netting both goals.
But the Sweden striker is confident that improvements will be made quickly and that Carlo Ancelotti's side will be competing for top honours sooner rather than later.
"Paris won't grow season after season but day after day," Ibrahimovic said. "There were doubts when the talks started. And then, the move became something obvious& PSG will be great and, for me, it is already great.
"This club has great dreams and we'll make them come true."
Ibrahimovic's former team-mate at Milan, Ronaldinho, shares his faith in the prospects of PSG.
The Brazil playmaker spent two seasons in Paris from 2001 to 2003, scoring 17 goals in 55 league games and is regarded as one of the best player in club's history.
He went on to become World Footballer of the Year at Barcelona after leaving the Parc de Princes and says he will be keeping a careful eye on his old team's fortunes.
"It's great", Ronaldinho said when asked about his former side's transformation thanks to Qatari investment by by L'Equipe. "There are now great players but also friends as [Thiago] Silva and Zlatan with whom I played à Milan. I'm happy for PSG and hope they will reap rewards with winning titles quickly."