Middlesbrough chief executive Keith Lamb is confident the club have nothing to fear from any probe into outbreaks of violence at the Banik Ostrava game. About 200 fans clashed before the Uefa Cup tie in the Czech Republic.
"I am confident we did everything we could to ensure all went well," Lamb said. "Let us hope for our next away trip we are given a few more tickets.
"There was nothing more we could have done. We did everything possible with regard to the 900 tickets we had."
The violence saw a number of seats ripped up and thrown before riot police quelled the disturbances.
Lamb added: "A lot of tickets made their way into the hands of Middlesbrough fans through the black market - that's a matter for Banik Ostrava and Uefa.
"We advised our supporters, as did the police, not to travel if they didn't have tickets for the visiting enclosure. But their desire was greater than the urge to be safe.
"I cannot prejudge what will happen as again that is a matter for Uefa. It is up to them to determine what action is necessary over this incident."
Middlesbrough, who were missing a number of key players, drew 1-1 with Banik to win 4-1 on aggregate and progress to the competition's group stage.
Boro manager Steve McClaren was delighted by his side's resilence after falling behind to David Bystron's superb volley and also losing Franck Queudrue, who was sent off in the second half.
But Boro fought back and debutant James Morrison's goal in stoppage time ensured McClaren's side remain unbeaten in Europe.
McClaren said: "I am thrilled we went through, but what pleased me most was the performance, which was composed, controlled and full of quality football at the right time.
"It had everything and we deserved to go through. When we went down to 10 men we needed strength of character for the final half hour, but even then we still played some great football.
"The icing on the cake was the goal, which was important to stop the rot after two previous defeats."