Ole Gunnar Solskjaer says Manchester United remain a bigger club than Manchester City despite their rivals' recent rise.
All eyes will be on the Etihad Stadium on Saturday evening as the blue and red halves of the city collide in the 179th Manchester derby.
United have a superior overall record in this fixture but City head into the match as reigning Premier League champions – their third title since United's last success under the retiring Sir Alex Ferguson in 2013.
"Of course Paul's going to play when he gets his fitness," Solskjaer said. "He's one of the best players in the world when he's in form.
"We just need to give him time to be 100 per cent fit. It might be 45 minutes, the first game. It might be half an hour, it might be 90.
"It depends on what game he comes back in and I'm looking to get Paul back to where I had him a year ago."