MANILA, Philippines — As a rematch between Manny Pacquiao and Puerto Rican Miguel Cotto began taking shape, Pacquiao’s Canadian adviser Mike Koncz frantically took a Saturday night flight to the United States in an effort to revive flickering hopes of staging a megabuck match with Floyd Mayweather Jr.

Koncz said he will meet up with Hall of Fame promoter Bob Arum to determine whether or not there is still a chance of salvaging the highly anticipated Pacquiao-Mayweather showdown.

Last week, Mayweather phoned Pacquiao, urging him to agree to a May 5 fight at the MGM Grand in Las Vegas, but the Filipino superstar answered that they should equally share the huge revenue that their fight will generate.

Less than a day after the conversation, Mayweather came out with a statement which was ran by ESPN Sportscenter, saying a 50/50 sharing cannot happen but still assured Pacquiao that he would still earn his biggest paycheck if they ever fought.

Pacquiao stood his ground, saying he will look elsewhere if Mayweather would not agree to his terms.

Cotto, who lost a 12th round stoppage to Pacquiao in 2009, is tops on the fighting congressman’s priority for a June 9 fight either at the 18,000-capacity MGM Grand or the slightly-bigger Thomas Mack Arena inside the University of Nevada-Las Vegas campus.

While Cotto’s name is always being mentioned, the Hispanic banger maintains that he hasn’t agreed to a second meeting with Pacquiao although there have been talks about that possibility.

Cotto is also on Mayweather’s radar screen. But owing to Cotto’s closeness with Arum’s promotional outfit Top Rank, which has been the Puerto Rican’s promoter since the end of 2011, it is very likely that Cotto will sign up for a Pacquiao bout.

The bone of contention in a Pacquiao-Cotto rematch would be the weight class they’ll agree to meet since in their first fight, they met at a catchweight of 145 pounds.

Recently, Pacquiao said he will require that they meet at no higher than 147 pounds.

Mayweather hasn’t totally ruled out a clash with Pacquiao, telling everyone last week that he is only interested in facing Pacquiao in what will definitely become the richest fight in history.