If I'm not wrong Manchester City can take the lead from Liverpool if they manage to win their missing game. Manchester City will probably win that game which is Brentford as well. But until then they have to keep the point gap like this at worst. Maybe they can get ahead earlier as well in Salah's absence for Liverpool but we will see.
In short Liverpool must be fully aware of the big threat behind. In the meantime I'm curious about Arsenal too. Do you think they can rejoin the title competition? I really can't be sure of them because of the highly inconsistencies they have every season.

Manchester City's next five games are Burnley, Brentford, Everton, Chelsea, and Brentford (outstanding game), which appear to be fixtures in which they can easily take all points or drop at least two, so there is every chance that they will be at the top before next month, when Arsenal and Liverpool face off in another title contender matchup in Game Week 23, and a draw here could mean a lot to Manchester City.
I don't see Arsenal playing to win the league title. They really started well at the beginning of the season but now they playing is just inconsistent. Although the league title is still much open but it mainly between Man city and Liverpool. Although alot of matches are still to be played, so no one can really say who the league title belongs to.
We are already in the second phase of the fixtures. Arsenal performed well in the first phase but are struggling in the second part; this is not a good sign for them, but they can however turn things around. The league is too wide open and unpredictable.