Liverpool analysts had watched how Barcelona players were always distracted when decisions went against them and word was passed down to Carl Lancaster, a coaching mentor at the club's academy, who asked the ball boys to serve their players quickly.
While England boast a formidable attacking threat, there are concerns about their defence which is perhaps why Southgate is prepared to look at new candidates before he has to make his final call for the tournament.
Liverpool manager Juergen Klopp is expecting his toughest test yet in a Merseyside derby when his side face local rivals Everton in the Premier League on Sunday.
Al-Nassr's Ronaldo red-carded as Al-Hilal win Saudi Super Cup semi-final
Images from English Premier League matches played on Sunday.
Liverpool took a giant step towards their first title since 1990 on Saturday when their 3-0 win at Bournemouth combined with Manchester United's 2-1 victory at Manchester City to leave the champions 14 points adrift of the Premier League leaders.
It promises to be a tense and thrilling finale to the season but Liverpool, who have frittered away a seven-point lead, will need to regain their momentum quickly if they are to push for their first league title since 1990.
Images from the English Premier League matches played on Saturday.
Images from the English Premier League matches played on Saturday.
Tottenham Hotspur and Liverpool fans' joy at reaching the Champions League final has been dampened by the eye-watering costs of travelling to Madrid for the June 1 showdown.
'Porto are a really, really good football team. We have to play at our limit 100 percent'
A round-up of Saturday's matches in the English Premier League.
The lack of a winter break in English football took its toll on Liverpool players' fitness levels and played a part in the Merseyside club's poor form since the start of the year, manager Juergen Klopp has said.
Liverpool boss Juergen Klopp has said his team will be 'on fire' for the Champions League final
The pain of missing out on a first domestic league crown for 29 years will be eased by the knowledge that European glory could be on the horizon for Liverpool
Liverpool's James Milner's converted a penalty on the stroke of half-time and Sadio Mane added a late second goal to secure a hard-fought 2-0 victory at Crystal Palace in the Premier League on Monday.
Imperious Liverpool extended their Premier League home winning streak against Arsenal to six on Saturday with an easy 4-0 victory that lifted them to second in the table.
Manchester City forward Raheem Sterling struck twice as the Premier League champions beat Crystal Palace 3-1 at Selhurst Park on Sunday to go top of the table and heap pressure on title rivals Liverpool.
Daniel Sturridge's Liverpool career seemed to be heading for a premature end last season but the striker showed on Tuesday he may yet have an important role after taking his chance during a rare start in the Champions League win over Paris St Germain.
Liverpool's 1-1 draw at Everton could not save manager Brendan Rodgers from the sack.
'That is how it is. How we created the moments was outstanding, how we caused them problems was outstanding, we controlled the game so well'
Five-time European champions Liverpool are in the quarter-finals of this year's competition
Liverpool ripped apart Manchester City with three goals inside the opening 31 minutes as they won their Champions League quarter-final, first leg tie 3-0 on Wednesday.
Real Madrid fought back from two goals down as Vinicius Jr grabbed a hat-trick in a thrilling 5-2 win over visitors Borussia Dortmund in the Champions League.
IMAGES from the Champions League 2nd semi-final first leg match between Barcelona and Liverpool at Nou Camp on Wednesday
Ruthless Arsenal threw down the gauntlet in the Premier League title race with a 5-0 thrashing of London rivals Chelsea to roar three points clear at the top of the table on Tuesday.
Liverpool manager Juergen Klopp has dismissed claims that it is the perfect time to face Tottenham Hotspur because of injuries to key players and concern over striker Harry Kane's form and freshness.
Liverpool suffered a shock 2-1 loss to Championship side Wolverhampton Wanderers in the FA Cup fourth round on Saturday, handing manager Juergen Klopp a third home defeat in a row.
Liverpool had been the better side for great swathes of the Premier League encounter at Stamford Bridge, but a combination of poor finishing and resilient Chelsea defending meant they entered the dying minutes trailing 1-0 to Eden Hazard's superb finish.
United stewards ejected the fan, who British media reported had targeted Liverpool defender Trent Alexander-Arnold, in the first half of the game.
The 58-year-old pointed to the 26-point gap in the Premier League table between runners-up Liverpool and his fourth-placed former team as evidence of a massive gulf between the sides.
For all their improvement under Klopp, European champions Liverpool have not won at Old Trafford under the German
Real Madrid coach Zinedine Zidane has warned Liverpool that his side are as hungry as ever to win the Champions League, rejecting claims that the Spanish giants might have lost their edge ahead of Saturday's final in Kiev.
Arsenal returned to the top of the Premier League with a comfortable 2-0 victory over relegation-threatened Luton Town
Images from Sunday's action in the Premier League.
Manager Juergen Klopp has extended his contract with Liverpool, less than a year since joining the club, the English Premier League side announced on Friday.
Reports in British media put the latest bid at 125 million euros.
Liverpool were left frustrated by Championship side Blackburn Rovers who defended heroically to draw 0-0 at Anfield.
Liverpool cranked up the pressure on West Ham United manager Slaven Bilic with a 4-1 victory at the London Stadium, while Burnley's remarkable start to the Premier League season continued thanks to a 1-0 victory at Southampton on Saturday.
Liverpool regained their place at the top of the English Premier League with a 2-0 win at Cardiff City on Sunday that restored their two-point lead over Manchester City
