The first leg of the CONCACAF Champions League final will take place in front of a sell-out crowd according to reports.

Record reports that Club America's meeting with Montreal Impact at Estadio Azteca in Mexico City on Wednesday night has reached capacity of around 105,000.

The attendance will far outweigh anything the Impact has played in front of before and the atmosphere is expected to be daunting for the Canadian outfit who is the first MLS team to play in the CONCACAF final since Real Salt Lake lost to Monterrey in 2011.

Club America's presence in the decider is the 10th-straight year a Mexican club has featured in the final. Las Aguilas last won the competition in 2006.

The return bout takes place at the Olympic Stadium in Montreal on April 29 with a crowd of more than 58,000 expected.