Manchester City and Liverpool are showing no signs of letting up in their thrilling Premier League title race but their flawless form contrasts sharply with the struggles of the teams chasing a top-four finish. Manchester United host Chelsea on Sunday hoping to arrest an alarming slide of seven defeats in nine games in all competitions. But it is only thanks to the poor form of Maurizio Sarri’s men and Arsenal, who have suffered back-to-back defeats against Crystal Palace and Wolves, that Manchester United remain in the hunt for Champions League football next season, just three points off the top four.