A 0-0 home draw against Pohang Steelers and a 2-2 away result at Tianjin Teda has the Mariners second in their group, two points behind the team they meet at Blue Tongue Stadium.
Injured midfielder Ahmad Elrich says a win at home is vital.
“Obviously they are going to be a quality team, but they are beatable,” he said.
“They have drawn against Pohang and we should have beaten them.
“It is going to be difficult because they are going to be very good technically and very sharp, so we will have to watch them.
“It’s a massive game – if we beat them we will be sitting first and going over to Japan and Korea looking to play a tactical game aimed at getting results there.
“That’s why home games are the important ones for us. We have to capitalise in front of our home fans.”