When asked if Beckham would travel with the squad Ancelotti said "No, he'll be staying here to work.
"He needs more training but he'll be ready next week for the game at home to Marseille (on Sunday). Not necessarily to start, but to play."
Ancelotti thinks Beckham has a lot to offer and added: "He can bring his experience, his quality, his professionalism, these are things that we need."
Beckham, who is looking to win a league title in a fourth different country, started full training with PSG this week but has not played since his last appearance for the Los Angeles Galaxy on 1 December.
He trained in London last week along with some personal fitness trainers.
PSG lead Lyon by six points at the top of the Ligue 1 table, with Marseille eight points back in third, ahead of this weekend's matches.