Manchester United were left a huge 14 points behind Premier League leaders Manchester City as Crystal Palace held them to yet another goalless draw on Wednesday.
The stalemate at a foggy Selhurst Park was United’s third successive goalless draw in all competitions ahead of Sunday’s Manchester derby against City, who are on a record-breaking 21-game winning streak.
Elsewhere, third-placed Leicester had captain Kasper Schmeichel to thank for a point in a 1-1 draw at Burnley.
Aston Villa missed the chance to move to within two points of the top four as they suffered a shock 1-0 loss to bottom-of-the-table Sheffield United, who held on for the final half an hour with 10 men.
A point in south London left second-placed Man United just one ahead of Leicester, with the main aim now for Ole Gunnar Solskjaer’s side to cling on to a top-four place that will secure Champions League football next season.
“We have to do much better, we have to risk more in attack to create more chances,” United midfielder Nemanja Matic, who almost broke the deadlock with a deflected shot, told Sky Sports.
“We are Manchester United, we have to win this kind of game. On Sunday we have a big game against Manchester City. We have to refocus for that.”
Leicester’s challenge for a return to the Champions League next season has been badly hit by a series of injuries to key players and the presence of James Maddison, Harvey Barnes, Jonny Evans and James Justin was badly missed.
A newly configured defence and midfield for the visitors showed as Hamza Choudhury’s slack pass to Wilfred Ndidi allowed Matej Vydra to smash home his first league goal in nearly 12 months after just four minutes.
Choudhury missed a great chance to quickly make amends as his looping effort was tipped over by Nick Pope.
However, Kelechi Iheanacho’s splendid finish drew Leicester level on 34 minutes as the Nigerian volleyed home from Ndidi’s floated ball over the top.
Schmeichel then produced two stunning saves to prevent Chris Wood restoring Burnley’s lead early in the second half.
The Dane leapt to his left to parry the New Zealander’s powerful header before getting down low to his right to turn another deflected Wood shot wide.
Ashley Westwood then rattled the post for Burnley, but Leicester finished the stronger and could have snatched a victory that would have taken up to second in the table.
Marc Albrighton stung the palms of Pope before Youri Tielemans’s shot came back off the post.
A point takes Burnley six points clear of the bottom three in 15th.
Sheffield United secured just their fourth win of the season as David McGoldrick scored the only goal against a Villa side desperately missing the inspiration of injured captain Jack Grealish.
McGoldrick swept home George Baldock’s cross off the underside of the bar.
Bertrand Traore fired wide from the edge of the area and Ollie Watkins hit the post for Villa before Phil Jagielka was sent off for denying a clear goalscoring opportunity when he chopped down Anwar El Ghazi.
Despite dominating possession, Villa failed to make the man advantage count to remain down in ninth.
Blades boss Chris Wilder has already conceded his side are headed back to the Championship, but they close the gap to survival to 12 points.
Wilder said: “Any result in this division is a huge result for Sheffield United.
“Obviously it was made a little more difficult going down to 10 men, but we showed good character -- as I’ve spoken about all season regarding my team.
Agence France-Presse
English Premier League results on Wednesday:
Burnley 1 (Vydra 4) Leicester 1 (Iheanacho 34)
Sheffield United 1 (McGoldrick 30) Aston Villa 0
Crystal Palace 0 Manchester United 0