Arsenal fielded a strong team with Ozil installed as captain and the Premier League side soon took control against weakened opposition, given the time and space they will not be afforded when the domestic campaign kicks off in August.
Borussia Dortmund reached the German Cup semi-finals with a 3-1 win at VfB Stuttgart on Tuesday as fans protested against high ticket prices by staying away at the start and throwing tennis balls on to the pitch.
Bayern Munich kept their five-point lead at the top of the table on Saturday, drawing 0-0 at second-placed Borussia Dortmund to stay on track for a record fourth consecutive Bundesliga title.
Barcelona were held to a 0-0 home draw by Galatasaray in the first leg of their Europa League last-16 tie
Egypt striker Mohamed Salah was voted as the African Footballer of the Year for the second successive year at the Confederation of African Football's awards ceremony in Dakar on Tuesday.
Juventus forward Cristiano Ronaldo and Barcelona's Lionel Messi, who have won the award 10 times between them, are included
Riyad Mahrez, who inspired Leicester City to an extraordinary Premier League title triumph last season, was named African Footballer of the Year on Thursday.
The result leaves Ole Gunnar Solskjaer's United in 10th with nine points, their worst start after seven games for 30 years, and they have won just one of their last six league games.
Pierre-Emerick Aubameyang scored twice as a rejuvenated Barcelona gave a football masterclass to inflict a humiliating 4-0 defeat on rivals Real Madrid on Sunday.
Joint-leaders Tottenham Hotspur and Liverpool both dropped points on a busy day of English Premier League action as Leicester City and Southampton narrowed the gap in what is shaping up to be one of the most open title races for years.
Pierre-Emerick Aubameyang scored twice to earn Arsenal a 3-2 Premier League win over Everton on Sunday, extending the Gunners' unbeaten start to 2020 and moving them back into the battle for European places. The win lifts Mikel Arteta's Arsenal side up to ninth place in the league with 37 points, while Everton remain without a victory at the Gunners in 24 years and a point adrift in 11th.
Holders Real Madrid chased away some of their early-season blues when Gareth Bale scored the pick of the goals in a 5-1 rout of FC Basel in their Champions League Group B opener on Tuesday.
Tottenham Hotspur bolstered their hopes for a top-four finish and extended Chelsea's miserable run
Arsenal's Pierre-Emerick Aubameyang struck a vital late goal to seal a 3-1 win over Valencia on Thursday and give his side breathing space for the second leg of their Europa League semi-final in Spain next week.
Pierre-Emerick Aubameyang missed a penalty before scoring an 80th-minute equaliser as an injury-hit Borussia Dortmund failed to win for the second straight game after stumbling to a 1-1 home draw against Hertha Berlin on Friday.
Manchester City tore Arsenal apart for the second time in five days on Thursday, beating them 3-0 on a freezing night at The Emirates to restore their 16-point lead as they close in on the Premier League title.
We have been monitoring him for the past few months, we had a clear intention to strengthen in the attacking midfielder and the winger positions (and) he is a player that gives us a lot of versatility.
A summary of Sunday's Premier League matches.
Title contenders Borussia Dortmund twice hit the woodwork as they beat Freiburg 3-1 to join leaders Bayern Munich at the top of the Bundesliga.
Arsenal manager Mikel Arteta continues rebuilding the side around goal machine Pierre-Emerick Aubameyang and younger talents like Bukayo Saka.
AC Milan have been drawn to play Manchester United in what is the standout tie in next month's Europa League round of 16.
Substitute Alexandre Lacazette struck with the last kick of the game to give Arsenal a rollercoaster 2-2 home draw with Crystal Palace in the Premier League on Monday after the visitors had fought back from a goal down.
Tottenham Hotspur claimed a first victory at Chelsea for 28 years with Dele Alli scoring twice in the second half as they came back to win 3-1 and cement fourth place in the Premier League on Sunday.
Juergen Klopp got a taste of the problems at Liverpool as his first home game as manager ended in a frustrating 1-1 draw against Rubin Kazan who played more than 50 minutes with 10 men in the Europa League on Thursday.
IMAGES from the English Premier League match played between Arsenal and Chelsea at Emirates Stadium in London on Sunday.
The home team's record signing Jefferson Lerma, who cost 25 million pounds ($32 million) in August, scored a spectacular own goal to give Arsenal the lead but Norwegian international Josh King, back in the Bournemouth side after injury, equalised just before halftime.
Arsenal have signed forward Nicolas Pepe from French club Lille for a club-record fee, the Premier League side said on Thursday.
Arsenal squandered a two-goal lead as Watford hit back to draw 2-2 in new manager Quique Sanchez Flores's first game of his second stint in charge at Vicarage Road on Sunday.
With no Champions League football for a third straight season, the financial realities are starting to bite and Arsenal will be desperate for some of their talented youngsters to come through.
IMAGES from Europa League matches played on Thursday.
Bayern Munich scraped past Hertha Berlin 1-0 on Saturday.
Yaya Toure was named African Footballer of the Year for a record fourth straight time at the annual Confederation of African Football awards on Thursday.
La Liga players dominate this year's Best Player in Europe shortlist, announced by the continent's governing body UEFA on Monday, with seven of the top 10 contenders for the prestigious award currently plying their trade in Spain.
Arsenal manager Unai Emery was pleased with his team's first away clean sheet of the season.
Robert Lewandowski struck twice to steer champions Bayern Munich to a 2-1 win at Hamburg SV on Friday that stretched their lead at the top to 11 points as the Bundesliga resumed following a one-month winter break.
Arsenal finally halted their seven-match losing streak, to go up to ninth spot with 22 points from 16 games in the Premier League table on Monday.
Summary of the Europa League semi-final matches played on Thursday.
Manchester City made it five wins out of five in the Premier League and Cristiano Ronaldo scored five goals for Real Madrid but Chelsea and Juventus continued to struggle at the weekend as the Champions League looms.
Japan international Shinji Kagawa sparkled on his return to Borussia Dortmund, scoring one goal for the Ruhr Valley club and helping set up another in a 3-1 win over Freiburg on Saturday.
The difference between this side and the under-achieving teams towards the end of Wenger's reign is their experience. Martinelli made his debut in 2019 while Saka has been a regular since the 2019-20 campaign.