Fans also think Dortmund's triumph means Sancho has won his own battle with Ten Hag after being exiled by the Manchester United boss and then offloaded on loan.
Manchester United fan account @UnitedRadar wrote on X: "Jadon Sancho has reached the semi-finals with Dortmund. This must be horrendous for Ten Hag."
Another supporter @ReadItSaidIt, added: "Congratulations to Jadon Sancho for going further in the champions league than 'best signing since Cantona' bruno fernandes and Ballon dor rashy have ever gone."
Sancho is not the only ex-Manchester United player in the semi-finals, as pointed out by @BendIt7ikeBecks: "Sancho and Sabitzer in a CL semi final. This club hasn’t been in one since 2011. Ronaldo has 36 goals this season. Bruno, Rashford, Garnacho, Hojlund have 29 goals. De Gea conceded 43 goals last season. Onana 48 goals conceded 6 games to play. Erik Ten Blag."
Another supporter, @TJayyyy_1, highlighted United's lowly Premier League position: "Sancho & Sabitzer helping their team to the UCL SF, somewhere United haven’t been since 2011. Then you’ve got ETH rotting in 7th."
And @WelBeast showed how Sancho might just be feeling right now regarding Ten Hag, posting the famous 'I won' meme from hit TV show Breaking Bad on X with the caption: “Jadon Sancho is heading to the Champions league semifinals while Eric Ten Hag is sat at home unsure of whether or not he'll still have his job at the end of the season."