The defending champions go into the game at the Steelyard trailing Zob Ahan following a narrow defeat in Esfahan last week but Park is counting on home advantage and his side's clinical edge to come out on top against the Iranians in the quarter-final second-leg.

"Zob Ahan tend to counter-attack in away games. That is what they do but we don't have to care about their strategy too much," he said.

"We just have to focus on our game. Eventually we will bring them down with a lot of goals."

Pohang have struggled in the K-League this season after lifting the continental crown last November but Park denied this year's side were much weaker.

"That is wrong, we are just passing through a rough period," he insisted.

"We are still strong and playing a good football. Okay. I admit that we are still being affected by last year's success but we are improving again."

Zob Ahan boss Mansour Ebrahimzadeh, who will have Iran striker Mohammad Reza Khalatbari back after suspension, knows his side face a fight to protect their advantage.

"Pohang are the champions and the most powerful team in the K-League," he said.

"I think that we are going to have a tough game tomorrow but we will do our best to get a victory with fair play, as we did at home."

Al Shabab welcome Jeonbuk Motors to King Fahd International Stadium having seen off their opponents 2-0 in the first leg in Korea.

Despite their position of strength, boss Jorge Fossati is taking nothing for granted.

The Uruguayan explained: "The match is going to be very hard for us as we are playing against strong opponents.

"This result is not big and that's why we haven't secured our place in the next stage. The match is not normal and we have no other alternative but to win the game.

Korean midfielder Song Chong-gug returns for the hosts to face his countrymen.

Jeonbuk coach Choi Kang-hee admitted the 2006 winners face an uphill task.

"I have prepared the team well for the game as we want to recover our good image as former champions of the competition," he said.

"Our situation is definitely not good, it's a difficult one. Our players know that the next game is very hard for us and hopefully they can recover and make a good comeback."

Seongam Ilhwa Chunma travel to Suwon World Cup Stadium to face Suwon Bluewings having outclassed their K-League rivals 4-1 in the first encounter but boss Shin Tae-yong warned his men against complacency

"Our biggest enemy is a lack of focus," he said.

"We could go through with a 2-0 defeat but we will do our best not to let that happen and we want to progress with a win."

Suwon boss Yoon Sung-hyo stressed an early goal was key to his side's chances of pulling off an upset.

"Losing the away leg 4-1 and then having to win by three goals is something of a burden but we will do our best to get an early goal and then anything can happen," he said.

Finally, Al Gharafa host Al Hilal at Al Gharafa Stadium looking to make up a 3-0 deficit against the competition's strongest team.

"Things would have been better if we had scored a goal. We were a bit unlucky not to have scored in the first leg," said coach Caio Junior, who will be without veteran midfielder Juninho.

Al Hilal coach Eric Gerets is missing defender Osama Hawsawi due to injury but has called for more of the same from his men.

"We are here to win. We won't play for a draw. My players know that I never ask them to play for a draw. We are an offensive team," he said.