Palace signed Mateta permanently from Mainz, though was also interesting St Etienne.
Perrin told L'Equipe: "The first file on the table was that of Jean-Philippe Mateta. After reaching an agreement with him and staying in constant contact, he started playing and scoring in England.
"Crystal Palace has exercised the purchase option of €11m before he plays his 17 matches.
"Good for him."
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