Gaitan, 31, plays primarily as a left winger but also can play as a No. 10. He got his start at Boca Juniors in his native Argentina before winning three Portuguese league titles with Benfica. Gaitan moved to Spanish La Liga side Atletico Madrid in 2016 for a reported transfer fee of around $28 million, and he scored two goals and had nine assists in 28 league appearances since moving to China last year. Gaitan has made 19 appearances for the Argentina national team.