The 20-year-old midfielder, who has signed a five-year contract with an option for a further year after joining the club this summer from Feyenoord, was set to be an exciting asset as manager Keith Andrew praised him on his arrival.
"I love the way that Antoni takes the ball and drives - he has the ability to go past players and he's a goal threat," said Andrews. "He will complement the midfielders we have in the building.
"Now it's just a case of getting him used to the intensity and rhythm of the Premier League and our own intensity levels. I am looking forward to working with him."
However, his season now looks to be over as the club confirm that he has torn his ACL whilst on international duty.
“Brentford midfielder Antoni Milambo suffered an anterior cruciate ligament injury on international duty with Netherlands Under-21s.
“The 20-year-old, who signed for the Bees over the summer from Feyenoord, will undergo surgery and will be in rehabilitation for the remainder of the season.”
Brentford return to action against West Ham United on Monday night where Andrews will have to shuffle his pack whilst he waits for updates on Milambo’s injury which could seriously impact his career moving forward.