Celtic were denied silverware after a 1-0 loss to Sundowns at Orlando Stadium on Saturday night.
News filtered through to Celtic after the game that Langerman was suspended and should not have been named in the Sundowns squad.
"Another thing, I've just learned that Mamelodi Sundowns used one of the players that was on suspension but I'll leave it to the officials to deal with that.
"We were not sure what was happening, the fourth official saying he had to do one player at the time so we had to wait, spent about four or five minutes waiting but it's one of those things.
"It's been a good season under difficult conditions but we managed to finish in the top eight, we managed to get into the final. "
"So we have done well, the guys have done well, I'm so proud of them," he added.