But after English FA's intervention, the Bundesliga giants have now allowed the 17-year-old to feature in Steve Cooper's side only for the group stages.
A round-up of Saturday's matches in the English Premier League.
Lucas ended a goal drought stretching back to 2010 and Divock Origi missed a late penalty as Liverpool beat fourth tier Plymouth Argyle 1-0 in an FA Cup third-round replay on Wednesday.
Real Madrid forward Vinicius Jr. score twice as his side punished a sloppy Liverpool to win 3-1, while Manchester City beat Borussia Dortmund 2-1 in Tuesday's Champions League quarter-final first leg.
News of all that's transpired on and off the football field
European champions Liverpool made an emphatic start to the new Premier League season by scoring three times in the opening half an hour as they taught promoted Norwich City a harsh lesson with a 4-1 thrashing at Anfield on Friday.
Roberto Firmino struck a stoppage-time winner as Liverpool beat Paris St Germain 3-2 at Anfield on Tuesday after Kylian Mbappe looked to have secured a point for the French side in a compelling Champions League Group C clash.
The following are talking points from the weekend's Premier League action:
It was not so much the maths, though Liverpool's nine-point advantage over defending champions City, with one point less over Leicester City and Chelsea, is a significant gap, especially as Juergen Klopp's side have lost one league game in 18 months.
IMAGES from the EPL matches played on Wednesday
Joe Maguire was found guilty of repeated bodily harm, violence against public employees and attempted bribery. Sharman was found guilty of insult, repeated bodily harm and violence against public employees.
Salah back in Liverpool squad but may not be risked at Genk, says Klopp
Liverpool manager Juergen Klopp has a midfield conundrum and his Tottenham counterpart Mauricio Pochettino must decide whether Harry Kane is ready for action as both bosses face selection dilemmas for Saturday's Champions League final.
Leroy Sane struck the winner as Manchester City beat Liverpool 2-1 in a gripping English Premier League clash.
England manager Gareth Southgate may be recovering from a dislocated shoulder suffered while jogging, but he may run into more discomfort when deciding whether to drop Raheem Sterling for Marcus Rashford in Sunday's World Cup game against Panama.
Liverpool's Sadio Mane marked his return from injury with a late goal to break Norwich City's resistance and secure a 1-0 win on Saturday to extend his side's Premier League lead to 25 points.
Images from the Champions League football matches played on Wednesday night.
A last-minute own goal gave Liverpool a 2-1 win over Tottenham Hotspur to keep them top of the Premier League but Manchester City stayed two points behind having won at Fulham. Huddersfield Town were relegated after their defeat by Crystal Palace.
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.
IMAGES from the English Premier League match played between Manchester United and Liverpool at Old Trafford on Saturday
Twelve months ago Liverpool were ripping up the record books on the way to their first English top-flight title for 30 years but defeat by Everton on Saturday left them mulling a host of far less flattering statistics.
Images from English Premier League matches played on Sunday.
Images from the English Premier League matches on Saturday.
The win moved Spurs up to third but unbeaten Manchester City still looked in a class of their own at the top as Leroy Sane scored twice in a 4-0 stroll over West Ham United.
Liverpool thrashed Atalanta 5-0, Real Madrid boosted their chances of reaching the Champions League knockout stages with a 3-2 home victory over Inter Milan and Bayern Munich came from behind to crush RB Salzburg 6-2.
Striker Marcus Rashford scored a second-half winner as a young and much-changed England avoided an unprecedented fourth successive defeat by beating Switzerland 1-0 in a friendly on Tuesday.
Summary of all that transpired on and off the football field
Images from the EPL matches played on Sunday
Following is a match by match look at the English Premier League's weekend fixtures:
Manchester City claimed the win required to finally end Liverpool's relentless attempt to dethrone them as Premier League champions as they hit back from a goal down to crush Brighton and Hove Albion on the south coast on Sunday.
Ibrahimovic was forced off with a muscle problem with 11 minutes remaining, and the Swede was pictured sitting on the bench with an ice pack strapped to the back of his left leg.
IMAGES from the English Premier League matches played on Sunday
News of all that transpired on and off the football field
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.
There was no farewell goal but plenty of pride and appreciation as Wayne Rooney made his 120th and final appearance for England in a 3-0 win over the United States in a friendly at Wembley on Thursday.
Liverpool made it three wins out of three as Mohamed Salah scored twice in a convincing 3-1 victory over Arsenal on Saturday to take control at the top of the Premier League.
Premier League leaders Manchester City turned on the style with a 3-1 win over Manchester United in their derby clash, on Sunday, leaving Pep Guardiola's unbeaten side two points clear of Liverpool.
McTominay injury takes gloss of vibrant United display
Ole Gunnar Solskjaer continued his dream start as Manchester United caretaker manager with a 3-1 Premier League win over Huddersfield on his Old Trafford debut in the dugout on Wednesday.
A round-up of Saturday's matches in the English Premier League.