However, Polenz told transfermarkt.de that he could be persuaded to head back to his homeland if the right deal came his way.
"For Germany, there are requests and if it fits, and for me is a good perspective, one option is, of course," said the former Werder Bremen and Alemannia Aachen man.
Matthew Spiranovic scored for Western Sydney in the 56th minute before Besart Berisha levelled in the 86th minute and Henrique scored an injury-time winner to give the Roar their second title in three seasons.
"He plays very well when he has plenty of room and space and he does not get from me," Polenz said of Broich.
"Thomas has only recently told me how much he hates to play against me."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball