MANILA, Philippines – Even as he prepares for his fight against Ghana’s Joshua Clottey for a title defense on March 13, Manny Pacquiao still has Floyd Mayweather Jr. lingering on his mind.

Pacquiao's Hall of Famer coach Freddie Roach said his fighter has been showing some moves designed against the “Pretty Boy Floyd”.

“I saw Manny, sometimes when he's shadow boxing, he shows me how Mayweather fights and how he's going to take case of the problem,” Roach told FightHype.com.

The trainer said this somehow shows that Pacquiao is preparing himself mentally against Mayweather.

“I've never seen Manny do that before,” he said. “Manny really wants to fight him in the future because of the remarks he (Mayweather) made.”

The negotiations between Pacquiao and Mayweather went haywire when the latter demanded Olympic-style drug testing.

Mayweather's demand made it look as if the Filipino boxer has been taking performance enhancing drugs.

“We're not happy with his (Mayweather) remarks,” said Roach.

‘Be breaking Clottey down’

Meanwhile, Roach said that he doesn’t see the Pacquiao-Clottey fight reaching the full 12 rounds.

Pacquiao, the only boxer to win 7 world titles in 7 different weight divisions, will defend his World Boxing Organization (WBO) welterweight crown against Clottey at the Cowboys Stadium in Dallas, Texas.

“The beginning of the fight is going to be hard. He's (Clottey) a very good opponent and likes to fight, but we will break him down, and I'm very confident the fight won't go 12 rounds,” said Roach.

Roach said among Clottey’s arsenals that Pacquiao would have to avoid is the upper cut.

“I think his best punch is the upper cut and we're not going to fall into the pocket too often to let him use that shot,” he said.