Jlloyd Samuel is supremely confident that Esteghlal can progress to the next phase of the Asian Champions League.
The Iranian outfit take on Thailand's Buriram United in the quarter-final second leg next week following their 1-0 home win late last month.
Former Aston Villa and Bolton defender Samuel, who is a key Esteghlal man, feels he and his teammates will give a better account of themselves in the return bout with the Thai club.
"They had the advantage because they had played more games than us before the first leg. Their domestic league is just finishing while ours is just beginning, but I am confident we will improve once we have played more games," said the 32-year old, who arrived in Tehran prior to the 2012 season.
"Buriram did surprise us in the first leg. They were a well organised team and they could pass the ball very well and in the last minutes of the match I believe we were very lucky.
"We were happy with how we played in the first leg, although we could have done better.
"The second leg will be a tough game, but I'm confident we will play well and win.
"We are only thinking about our second leg and we have to win if we want to advance."