ASSE have been in talks with Palace and Mateta's parent club Mainz about taking over the striker's loan this month.
Negotiations initially stalled with Palace insisting they needed to find a replacement before releasing Mateta. However, it then emerged that Palace were now rethinking the deal altogether given Mateta's sudden goalscoring form.
However despite the fresh competition, there remains a confidence inside ASSE that Mateta will end up joining them in January.
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