A day after the former LA Galaxy star joined PSG, the coach told the press that Beckham needs to fight for his spot on the pitch.
Beckham, who left MLS after winning his second straight championship with the LA Galaxy last season, shocked the soccer world when he reached a deal with the Ligue 1 side on transfer deadline day. The 37-year-old had turned down several other offers from around the world.
Beckham will donate his salary to a children's charity after signing the five-month deal with PSG, but his good deed doesn't mean he is a lock to find the pitch this season. Ancelotti said Beckham will "help the team in terms of quality and experience" but he has to earn his spot on the pitch.
"He still needs two weeks to be in good physical condition. After, we will see what happens," Ancelotti said after PSG's win over Toulouse on Friday. "If he deserves to play, he will play. He can play as a defensive midfielder or right flank, but he needs to have the merit to play."
Beckham had been training with Arsenal prior to making his decision to come to Paris early Thursday morning, and acknowledged that he did not join the club expecting to start.
"I don't expect to come into this team and play in every single game. I don't expect to start. I have to work for that," he said. "It is a bonus they are in the Champions League. I've been lucky to win it in the past and I know how important it is for clubs."
Beckham will have shot to win a title in his fourth country. PSG is in the Champions League knockout stage and the club currently leads Ligue 1, searching for the club's first league title in 19 years.
Beckham is just the latest big name to join PSG after the club spent a total of $140 million last summer to bring in Swedish forward Zlatan Ibrahimovic, Brazil's Thiago Silva and Lucas, and Argentina's Ezequiel Lavezzi.
"The team will improve with [Beckham]," Ancelotti said. "I have no doubt about it."