The transfer will see Marcone reunite with Elche boss Jorge Almiron, who was Marcone's manager at Argentina's Lanus in 2016 and 2017.
However, the six-time Ballon d'Or winner has not been able to win a major trophy at international level; a gold medal at the Beijing 2008 Olympics notwithstanding. The 2022 World Cup in Qatar might be his last chance to change that.
The financial impact of the pandemic on football has been apparent, the former Leipzig coach said.
The Argentinian bested Nadal in the Rome Masters quarter-finals last month for his first win against the world number two.
Esteghlal had been linked with former Werder Bremen coach Alexander Nouri but they failed to reach an agreement with the German-Iranian coach due to financial disagreements.
The Chinese Super League (CSL), which started the 2020 season behind closed doors in July, has been slowly opening up to a limited number of spectators last month.
China's Shi Yanghe and Zhao Jiangqiong won the men's and the women's 65km races respectively.
Tianjin maintained its tactical structure, and overwhelmed its opponent with a 14-2 run in the third set.
Despite two big losses into the season, Daqing coach Ji Yanyan would rather pick up something positive from her young team.
Jorginho scored two penalties in the 78th and 82nd minutes to assure a comfortable win in the best performance by Frank Lampard's side this season.
In women's actions, top seed Simona Halep took sweet revenge on her opponent from last year's French Open defeat, trouncing American teenager Amanda Anisimova 6-0, 6-1 to progress.