PARIS. Champions Paris Saint-Germain are sweating on the fitness of star striker Zlatan Ibrahimovic ahead of the visit of Bastia on Saturday.PSG trail big-spending rivals Monaco on goal difference at the top of a Ligue 1 table increasingly developing into a two-horse race, already at this early stage of the season.Those two remain the only unbeaten sides after nine games and have both returned from the Velodrome cauldron with maximum points from a trip to their only potential challengers, Marseille.But the news is not good for PSG as Ibrahimovic was injured when playing for Sweden last Friday.He started training on his own on Thursday but the thigh problem could yet see him miss Saturday’s match.It would be a further blow for the Parisians, who will already be without suspended midfield pair Thiago Motta, who was sent-off against Marseille, and Marco Verratti, whose booking against the same team led to his ban.PSG are simply looking for three points to ensure Monaco, who travel to second-from-bottom Sochaux on Sunday, do not get away from them.