After losing 4-0 in the first leg in France, Barcelona scored three times in the last seven minutes to win a thrilling last 16 home game 6-1 on Wednesday and march into the quarter-finals.
Officials of IFAB, the International Football Association Board, made up of the four British home nations and FIFA, agreed to conduct a year-long review into the offside law, which is expected to end with a proposal for a new rule.
However, one goal proved enough for City who picked up their sixth successive league win to move four points clear of Liverpool, who host Aston Villa later on Saturday, at the top of the standings.
Defending champions United States reached the women's World Cup final for the fifth time after an incident-packed 2-1 win over England, who missed a late penalty, on Tuesday.
The change in the rules will be allowed in all competitions which are due to finish by the end of this year and it will be up to individual competition organisers whether to implement it.
UEFA said on Thursday that they will probe the matter and opened disciplinary proceedings against England on the matter.
England and Denmark were 1-1 at half-time in the second Euro 2020 semi-final at Wembley on Wednesday.
Images from Wednesday's action in the UEFA Champions League.
Images from Tuesday's action in the UEFA Champions League.
IMAGES from the English Premier League matches played on Sunday.
With the world watching him in a World Cup opener against Iceland, the normally brilliant Messi struck a weak spot-kick that was saved, leaving Argentina with a disappointing 1-1 draw.
'But that in no way diminishes France's win. Maybe we were a bit unlucky, in the first six games we were favoured by luck'
Raheem Sterling scored a hat-trick as champions Manchester City made a convincing start to their title defence with a 5-0 win over West Ham United.
Juventus came from behind to snatch a dramatic 3-2 win at Chievo as Cristiano Ronaldo made his debut for the Turin side on Saturday, although the Portuguese was not among the scorers in his first Serie A match.
Finland, who came third with three points, must wait until the end of the group stage to see if their adventure in a first ever major tournament will continue and they need a series of results to go their way if they are to make the last 16.
Images from Saturday's action in the Premier League.
The hosts struggled to break down Arsene Wenger's side despite enjoying the majority of possession and will feel hard done by after crafting the best of the game's few openings in a lively game at Stamford Bridge.
The win took second-placed Real to 62 points after 29 games, two behind champions Barca who beat Leganes 2-0 on Tuesday.
Hazard extra-time goal sends 10-man Real Madrid through to Copa del Rey final.
Manchester City showed that their weekend derby loss was a blip as Kevin de Bruyne and Riyad Mahrez both scored twice in a 5-2 win over Southampton
Arsenal, who fired Unai Emery as manager last week and appointed former player Freddie Ljungberg as caretaker boss, now sit 10th in the table on 19 points, with Brighton a single point behind and three places below them.
Barcelona's 100 per cent start to the season was ended by Catalonian neighbours Girona, who picked up a draw at the Nou Camp, allowing Real Madrid to take advantage with a victory over Espanyol.
Images from Saturday's action in the Premier League.
IMAGES from the English Premier League matches played on Saturday
City, storming towards their third league title in four years, scored three late goals to wrap up victory and move onto 65 points with 11 games left to play ahead of Manchester United on 50 points with a game in hand.
Images from Saturday's Premier League matches.
Inter Milan got a crucial 1-0 win at Juventus on Sunday
Tottenham Hotspur reached the semi-finals of the Champions League on away goals after a 4-3 (aggregate 4-4) defeat to Manchester City in a breathtaking quarter-final second leg game on Wednesday.
Argentina lose to Brazil in Copa America semis
Here are talking points from the weekend's Premier League action:
Real Madrid overcame an early howler from Sergio Ramos to beat Real Sociedad 3-1 at home on an eventful Saturday at the Santiago Bernabeu, where Gareth Bale was loudly booed by his own supporters and Luka Modric returned to his very best form.
'When April arrives we have to be ready and to fight for the trophy'
News of all that transpired on and off the football field.
AC Milan grabbed a 1-1 draw at Manchester United in the blockbuster Europa League last-16 first-leg at Old Trafford on Thursday.
IMAGES from the English Premier League matches played on Sunday
Argentina got their World Cup qualifying campaign off to the perfect start on Thursday when Lionel Messi's early penalty gave them a 1-0 win over Ecuador in a lacklustre match in Buenos Aires.
News of all that's transpired on and off the football field
Stefano Sturaro, who joined Genoa on loan from Juventus in January before the deal was made permanent, put the home side in front in the second half before fellow substitute Goran Pandev secured the shock result with 10 minutes remaining.
News of all that's transpired on and off the football field