When the 24-year-old Brazilian joined then Chinese Super League champions Guangzhou Evergrande on loan from Turkish side Beskitas in June 2018, his new team had already been eliminated from that year's AFC Champions League competition.

As such, the 2019 edition became the exciting attacker's first taste of Continental action and he immediately took a liking to the tournament.

The two-legged fixtures will kick off on Tuesday and Wednesday with the return legs three weeks later. The two winning sides will progress to the final to be played on November 11 and 24.

We look at four players – one from each of the semi-finalists – who could be key for their respective teams' chances of victory.

Last minute winners, goal gluts and East-meet-West clashes, since the AFC Champions League's revamp in 2002-03, there have been plenty of thrills and spills when the tournament has reached the final four phase.

The-AFC.com looks back on some of these ties to remember and relive.

Although clubs from Saudi Arabia and Qatar have appeared in every single edition of the AFC Champions League since its inception in 2002-03, they managed to avoid facing-off in the knockout stages until 2009, but in the decade since, they have been pitted together on 10 occasions. The-AFC.com looks back at how each of these encounters panned out.

Wins were exchanged when the two sides met in the group stage of the 2015 edition, with Khalfan Ibrahim’s strike giving Al Sadd a 1-0 home win on Matchday Two and Al Hilal emerging 2-1 winners in Riyadh on Matchday Six; the last time the two sides met. the-AFC.com tracks where all 22 starting players involved in that last encounter are now.