Jude Bellingham has completed a medical at Borussia Dortmund ahead of his proposed transfer there from Birmingham City.
Although Bellingham has not signed a professional contract with the Blues, it is understood they will receive a transfer fee in excess of £26m.
The Championship side are due a guaranteed £25m up front and "several millions more" depending on appearances, achievements and milestones.
Bellingham left Birmingham airport on Thursday morning on a private jet to fly to Germany, and was not required to quarantine because of the travel corridor between the UK and Germany.
Borussia Dortmund appear keen to keep Bellingham away from German media. The club had four cars waiting for the plane - and all four drove off in different directions, hoping to keep his whereabouts a secret.
The Bundesliga club have courted the midfielder, who turned 17 in June, for more than two years, amid stiff competition from most of Europe's top teams, including Chelsea, Real Madrid, Bayern Munich and, most notably, Manchester United.
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The England U17 skipper has chosen Dortmund due to the club's long history of developing young talent and their policy of giving them the chance to play in the Bundesliga.
Manchester United manager Ole Gunnar Solskjaer will be disappointed to have missed out on the highly-talented box-to-box midfielder. United pulled out all the stops in their attempts to sign him, offering him a tour of their training ground with Sir Alex Ferguson.
Despite Thursday's developments, it is understood Bellingham will still feature in Birmingham's vital final two games of the season against Preston on Saturday and then versus Derby on July 22.
He posted on social media on Thursday evening indicating his intention to see out Birmingham's remaining Championship matches.
His first duties as a Dortmund player could come just eight days after his final game in the Championship, when the squad begin their pre-season training.
Ten days later the players head for their annual week-long training camp in the Swiss spa town of Bad Ragaz, with the new Bundesliga season set to kick off on September 18.
Analysis: Why Bellingham is a special talent
Sky Sports' Adam Bate:
Bellingham made his debut for the England U15 team at just 13 and clubs all over Europe have been targeting him for years. Now it is Borussia Dortmund prepared to spend big on Jude Bellingham.
At the age of 17, his transition to the senior game has been seamless. The touch and the class are apparent but he has coped physically too - putting in plenty of tackles - and handled the mental side of the step up impressively well. All the signs are that he is someone who is going to maximise his talent - and that maximum looks higher than most.
Birmingham were well aware they had a unique talent on their hands for some time and the club deserves huge credit for their handling of Bellingham's development both before and after his breakthrough into the first team. His transition has not been by luck. It has been a carefully thought-out process in order to help him along each step of the way.
The question now is whether he is prepared to take the next step in his development. There will be those who fear it is too soon. He has been playing regular Championship football, after all.
But the next step for Bellingham is the Bundesliga and Borussia Dortmund were not the only ones convinced that this is a player who is ready for that step sooner rather than later.