Timber’s winner just after the hour mark was the 16th goal Arsenal have scored from a corner in the Premier League this season – equalling the competition record.
The Dutch international headed into an empty net after Robert Sanchez got caught underneath Declan Rice’s ball in.
Neto then became the ninth Chelsea player to see red this season for two quickfire bookings.
Chelsea had a late equaliser ruled out for offside but defeat leaves Liam Rosenior’s men three points outside the top five, who will almost certainly secure a place in next season’s Champions League.
Second-placed Manchester City still have a game in hand on Arsenal and home advantage when the sides meet in the league next month.
Sesko rewards Carrick faith
Sesko was handed his first start in seven games since Michael Carrick took charge at Old Trafford and rewarded his boss with another vital goal to edge United closer to a return to the Champions League with a 2-1 win.
Benjamin Sesko’s goal lifted Manchester United to third with a 2-1 win over Crystal Palace. Photo / Getty Images
Palace had taken an early lead at Old Trafford when Maxence Lacroix outmuscled Leny Yoro to guide in a header from Brennan Johnson’s corner.
But United hit back to remain unbeaten under Carrick and take their tally to 19 points from a possible 21.
The game swung on one incident as Lacroix was sent off and conceded a penalty for pulling back Matheus Cunha just before the hour mark.
Bruno Fernandes confidently stroked the resulting spot-kick past former team-mate Dean Henderson.
Fernandes was then the creator for the second as his curling cross was powered in by Sesko for his seventh goal in his last eight appearances.
“It feels like a big result,” said Fernandes. “We were behind and had to show some character.”
No Tudor turnaround for Tottenham
Tottenham remain perilously poised just four points above the relegation zone as interim boss Igor Tudor again failed to halt their alarming slide after a 2-1 defeat at Fulham.
“We were not good, [we] lacked everything attacking and defending,” said Tudor after two defeats in his two games in charge.
“There are problems here, big problems. We need to stay calm, believe in what we are doing in training, and get out [of trouble], staying all together.”
Tottenham Hotspur manager Igor Tudor. Tottenham lost 2-1 to Fulham, remaining four points above the relegation zone. Photo / Getty Images
Harry Wilson and Alex Iwobi gave Fulham a deserved half-time lead as they moved up to ninth and back into contention for European football next season.
Richarlison headed in a late consolation for Tottenham, but they remain the only Premier League side without a win in 2026.
The one crumb of comfort for Spurs was defeat for relegation rivals Nottingham Forest, 2-1 at Brighton.
All three goals arrived in the first 15 minutes as Diego Gomez and Danny Welbeck netted for the Seagulls either side of Morgan Gibbs-White’s reply.
Forest sit two points above the drop zone before a daunting trip to Manchester City this week.
– Agence France-Presse