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The Corinthians man is not intimidated by playing in the Bombonera, but confessed that stopping Boca's Argentine playmaker is the key to winning the Libertadores final

Corinthians star Alex has identified Juan Roman Riquelme as Boca Juniors' biggest threat in the Copa Libertadores final, asserting that the Argentine icon deserves the same close attention as Santos wonderkid Neymar.

The Brazilians meet Boca in the first leg of the South American showpiece on Wednesday, after battling to a 2-1 aggregate victory over the Copa holders in the previous round. The Xeneize, meanwhile, impressed in disposing of highly-rated Universidad de Chile without conceding a goal.

Riquelme has been one of the tournament's outstanding players as he has spearheaded Boca's bid to win the title they last lifted in 2007. Alex explained that the 34-year-old playmaker would be the man to watch in the Bombonera.

"We have to try and mark him as a team, as we did with Neymar in the semi-final. It needs more than one player's assistance to do that. The whole Boca team has to marked hard to stop the ball going to Riquelme's feet, he knows all too well what to do with it," the ex-Spartak Moscow midfielder told reporters on landing in Buenos Aires.

Alex, who lifted the Copa Libertadores and Club World Cup in 2006 with Internacional, also affirmed that playing in Boca's legendary home stadium held no fear for the Brazilians.

"With all due respect to Boca, and to you guys, why can't we [take a victory]? Logically we can win. We will come on to the pitch determined to play a great game."

Alex joined the Timao in 2011 after two years in Russia, and played a key role in the club's Brasileirao victory in the last campaign.