Central Coast Mariners teenager Sam Silvera has left the A-League club after completing a move to Portuguese top-flight side Pacos de Ferreira.
Adelaide United have lost A-League defender Dylan McGowan to a top-flight Portuguese club.
"I like watching Griezmann play. I believe I can do similar things to him, including physically we are similar," said Jota.
Atletico Madrid have signed 19-year-old winger Diogo Jota to a five-year contract, the club have announced.