- 1. FC Köln
Manchester City are firm favourites to retain the title as they travel to Brighton with a one-point lead over second placed Liverpool, who face Wolves at Anfield.
The win over Burnley moved Everton up to eighth and to within a single point of Wolves in seventh.
Gerard Deulofeu came off the bench to spark an incredible comeback as Watford beat Wolves 3-2 to set up an FA Cup final against Manchester City.
Ole Gunnar Solskjaer's side blew a chance to move into third place in the Premier League as they squandered the lead in a disappointing display at Molineux.
Paul Pogba last week described Real Madrid, managed by France great Zinedine Zidane, as a "dream club for every player".
Manchester City roared back from a two-goal half-time deficit to score three times after the break.
Manchester United slipped to their first domestic defeat under Ole Gunnar Solskjaer at Arsenal.
Palace won 2-0 away to third-tier Doncaster Rovers, the lowest league club still in the competition, while Wolves beat Championship side Bristol City 1-0.
Rafael Benitez's side were seconds away from a valuable victory after Isaac Hayden's first goal since 2017.
Mohamed Salah's 11th goal of the season was a classy one and helped subdue a dangerous Wolves side who had made a lively start.
Chelsea are currently in fourth place, 10 points adrift of Premier League leaders Manchester City after 15 games.
Henrikh Mkhitaryan, introduced as a 76th-minute substitute, floated a cross into the Wolves penalty area that evaded everyone before drifting in at the far post.
Jose Mourinho was concerned by what he saw as his team's poor attitude as he came close to suffering consecutive home league defeats for the first time in his career.
Alex Ferguson's emotional return to Manchester United for the first time since his life-saving surgery was spoiled as Wolves snatched a 1-1 draw at Old Trafford on Saturday.
City were good value for their point but they looked unusually vulnerable against Nuno Espirito Santo's well-drilled side.
Pedro headed in after 65 minutes following an intricate build-up from Chelsea, while Diego Costa scored in the 89th minute to help his side seal a place in the quarter-finals
The project is part of the West Bromwich Albion Foundation programme in association with Youth Football International (YFI) to scout, train and develop talent across the country. Selection trials will take place on January 18 at the Ambedkar Stadium.
Uruguay forward Luis Suarez struck twice early in the first half at Anfield and completed his treble soon after half-time.