By FOX Sports Staff
The 22-year-old has scored six goals in the Bundesliga and has impressed with his technical ability leading to speculation linking him with a move to the top two of Bayern Munich and Borussia Dortmund.
Marco Reus made such a move last summer as he left the Foals to join the Bundesliga champions and this increased the goalscoring burden on the young German.
Gladbach, however, are insistent that Herrmann will not be poached by the bigger clubs and believe that the club's pursuit of Champions League qualification should keep the youngster happy for now.
"We will not be entering into [discussions for] the sale of Patrick in the future," Erbel told reporters.
"We are building something that I hope the young players feel is going in the right direction."
The Gladbach youth team graduate was also recently called up to the Germany national squad for the World Cup qualifying match against Kazakhstan on Tuesday.
Herrmann revealed his delight at the opportunity as he told Bild: "For me, it's a dream come true!"
"It's a feeling you can't explain - pure delight. At first, I couldn't believe it."
Gladbach exited the Europa League at the group stage and are just one point behind fourth-placed Eintracht Frankfurt.