Jadon Sancho is “ready to play for Liverpool or Manchester United”, admits Freund.
But Sancho has been warned not to make such move with Luka Jovic being used as an example of how big money move can go wrong.
Back in 2019, after starring in the Bundesliga for Eintracht Frankfurt, Jovic became one of the most sort after player.
Sancho is another shining light within the German top flight ranks attracting admiring glances from across the continent.
Most of those are coming from the EPL, with Sancho being heavily linked with a move to either Anfield or Old Trafford.
Ex Dortmund player, Freund can appreciate why Sancho that has enjoyed a meteoric rise to prominence would be wanted back in his homeland.
With number of goals scored and assists continuing to be delivered in the current 2019-20 season.
Sancho is, however just 20 years of age, a year younger than Jovic was when he headed to Spain.
There is a fear that he may be jumping too soon if a transfer is pushed through in the next window.
Freund told talkSPORT: “Jadon is ready to play for Liverpool or Man United, no question, because his stats are unbelievable.
That shows that he can take the next step.
“In the Borussia Dortmund side with Erling Haaland, Julian Brandt improving, with Emre Can signing, with changing to a back three that suits Sancho.
“It would be good for him to play for Borussia Dortmund now and next year so that he will have more match time.
“He’s only 20, so why not play for Borussia Dortmund? We’re not talking about Freiburg or Paderborn, we’re talking about Borussia Dortmund, one of the top 20 clubs in Europe.
“Remember Jovic, who moved to Real Madrid from Eintracht Frankfurt, he’s not playing.
If you have an offer from Real Madrid you think, ‘I have to go’.
“No, you don’t have to go because the salaries in the Bundesliga are on a good level, too, not as much as Real Madrid or the Premier League, though.
“But you can earn good money and improve and not make too much of a big step at once.
“So for Jadon to move to Man United with that pressure, they are struggling to qualify for the Champions League.
So maybe it’s better to stay another year in Dortmund.”
He added: “If the offer comes in and the people from Borussia Dortmund think it’s right then they will sell him.
“With the coronavirus, if something goes wrong in the Bundesliga and we can’t see football until the end the year.
Then it’s not the right moment to talk about players, they cost so much money.
“I think the price will drop anyway, all the clubs in Germany are losing a lot of money.
“It’s not the same without money from tickets and sponsors and so it’ll be difficult to keep your best players.”