Manchester United legend Gary Neville says only Manchester City can catch the Premier League leaders.
Neville believes City are still the only team capable of preventing United from winning the league.
"There's no way Manchester United will be caught by 18 of the teams, but with Manchester City I would never get carried away at this point of the season," he said.
"They were neck-and-neck last year and City were five points ahead at one point early in the season, so if you're a Manchester United fan, manager or player you wouldn't be getting carried away.
"Manchester City are capable of going on long unbeaten runs, I don't think they've hit their best yet and there's a long way to go. I wouldn't read too much into the six-point gap; it's a good position for United to be in, but for City I don't think all is lost."