The striker limped out of his side's 6-0 win over Arsenal at the weekend with a hamstring injury.
Recent reports have claimed that the complaint will rule the 33-year-old out of action for at least a fortnight, although Eto'o has admitted that he is in the dark regarding his recovery time.
"I always dreamed of playing at Parc des Princes. Unfortunately, my injury may not allow me to be there. Can I get fit enough? Time will tell. I can't say anything but I will work to be there," the London Evening Standard quotes the centre-forward as saying.
Eto'o has scored 11 goals in all competitions for the Blues this season.