The Liga MX outfit host the Impact in the first leg of the CONCACAF Champions League final on Wednesday night on the back of their 4-0 league defeat to Queretaro.
Former Standard Liege star Ciman is aware that a team like America will be desperate to put things right after a poor showing domestically and has implored his Impact teammates to be ready.
"They'll want to pressure us straightaway, score from the get-go. They're playing in front of their crowd," he said.
"They got whacked this weekend. They'll want to make amends. It won't be easy, we know that."