United averted slipping further into early season crisis by accumulating a number of successive victories of late, yet are still on just 34 points for the half-season, compared to 40 from Chelsea in third place, 41 from City in second and 42 from Arsenal, who lead.
With a roster of players that includes the goal-hungry and creative Sergio Aguero, the assist-happy Jesus Navas and towering defensive-minded players Yaya Toure and Vincent Kompany, City are oft favourites for every single match they compete in, particularly at home, where they have won all ten of their games at the Eithad Stadium.
However, Wenger cites vulnerabilities on the road as a potential cause for concern for his rival manager Manuel Pellegrini, saying they are not unbeatable.
'They have a squad of names who can pretend to win it but at the end of the day, it is down to what we do on the pitch. Are they, at the moment, completely unbeatable? Not for me. They have lost a number of games away from home.
'They have played one more game at home, than away. We have played one more game away, than at home. So it is open.'
Manchester City kick-off the New Year's Day football on lunch-time, against Swansea City in Wales, while Arsenal host Cardiff City and Manchester United entertain Tottenham Hotspur.
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