After Brahim Díaz and Jadon Sancho were tempted away, Rabbi Matondo has become the latest teenage talent to leave Manchester City.
Schalke have completed a deal for Manchester City teenager Rabbi Matondo, whose departure adds to the talent drain at the Premier League champions.
Jadon Sancho and Brahim Díaz have already left City for Borussia Dortmund and Real Madrid respectively after failing to break into Pep Guardiola's City squad, Riyad Mahrez's July 2018 arrival for a then club-record £60million pushing them down the pecking order.
Matondo, an 18-year-old winger capped once by Wales, has signed a four-and-a-half-year deal at Schalke, who face City in the last 16 of the Champions League next month.
City and Schalke have not confirmed the fee for a player that has never been named in a matchday squad by Guardiola, but reports have suggested the Bundesliga side have paid €13million.
"Before coming here I already knew a bit about Schalke: Mesut Özil, Ivan Rakitic and Leroy Sané all took big steps in their careers here,” said Matondo.
"As well as that, I had some good chats with the coach and my new team-mates only had good things to say. The Bundesliga is a great league too.
"Schalke is the right decision for my career and I'm happy to now be a part of this club and their future plans."
Schalke's 33-year-old coach Domenico Tedesco confirmed Matondo has been a target for some time.
"We have been interested in Rabbi for a long time, because we are impressed with his potential," he told Schalke's website.
"He is extremely quick and technically strong. We can't forget how young he is though. We will give him the time he needs to find his feet at Schalke and in the Bundesliga."
Sancho has made a stunning impact since leaving City for Dortmund, helping his new club top the Bundesliga and breaking into the England team, while Díaz has made one brief appearance off the bench in LaLiga since joining Madrid for a reported €15m this month.